1
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A comparison of placebo effects in clinical analgesic trials versus studies of placebo analgesia.
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Pain
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2002
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3.17
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2
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Racial/ethnic differences in the experience of chronic pain.
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Pain
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2002
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2.40
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3
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The contributions of suggestion, desire, and expectation to placebo effects in irritable bowel syndrome patients. An empirical investigation.
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Pain
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2003
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2.33
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4
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A randomized clinical trial of a brief hypnosis intervention to control side effects in breast surgery patients.
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J Natl Cancer Inst
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2007
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2.18
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5
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Long-term trials of pregabalin and duloxetine for fibromyalgia symptoms: how study designs can affect placebo factors.
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Pain
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2008
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1.98
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6
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Temporal summation of pain from mechanical stimulation of muscle tissue in normal controls and subjects with fibromyalgia syndrome.
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Pain
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2003
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1.89
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7
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Central representation of visceral and cutaneous hypersensitivity in the irritable bowel syndrome.
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Pain
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2003
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1.87
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8
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Individual differences in pain sensitivity: genetic and environmental contributions.
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Pain
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2007
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1.77
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9
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Pain measurement and brain activity: will neuroimages replace pain ratings?
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J Pain
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2013
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1.76
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10
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Reversal of visceral and cutaneous hyperalgesia by local rectal anesthesia in irritable bowel syndrome (IBS) patients.
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Pain
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2003
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1.74
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11
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Diffuse noxious inhibitory controls (DNIC) attenuate temporal summation of second pain in normal males but not in normal females or fibromyalgia patients.
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Pain
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2003
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1.71
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12
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Increased placebo analgesia over time in irritable bowel syndrome (IBS) patients is associated with desire and expectation but not endogenous opioid mechanisms.
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Pain
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2005
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1.68
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13
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Gender role expectations of pain: relationship to experimental pain perception.
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Pain
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2002
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1.56
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14
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Spatial summation of mechanically evoked muscle pain and painful aftersensations in normal subjects and fibromyalgia patients.
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Pain
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2007
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1.56
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15
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Enhanced central pain processing of fibromyalgia patients is maintained by muscle afferent input: a randomized, double-blind, placebo-controlled study.
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Pain
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2009
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1.55
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16
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Placebo-induced analgesia in an operant pain model in rats.
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Pain
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2012
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1.55
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17
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Influences of gender role and anxiety on sex differences in temporal summation of pain.
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J Pain
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2004
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1.55
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18
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Temporal summation of second pain and its maintenance are useful for characterizing widespread central sensitization of fibromyalgia patients.
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J Pain
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2007
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1.51
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19
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Functional brain interactions that serve cognitive-affective processing during pain and placebo analgesia.
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Neuroimage
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2007
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1.48
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20
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Morphine responses and experimental pain: sex differences in side effects and cardiovascular responses but not analgesia.
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J Pain
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2005
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1.47
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21
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Individual differences in pain sensitivity: measurement, causation, and consequences.
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J Pain
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2009
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1.45
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22
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Ratings of experimental pain and pain-related negative affect predict clinical pain in patients with fibromyalgia syndrome.
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Pain
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2003
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1.44
|
23
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Isometric exercise has opposite effects on central pain mechanisms in fibromyalgia patients compared to normal controls.
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Pain
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2005
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1.40
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24
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Do hypnotic analgesic interventions contain placebo effects?
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Pain
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2006
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1.39
|
25
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Brain activity related to temporal summation of C-fiber evoked pain.
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Pain
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2006
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1.36
|
26
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Maintenance of windup of second pain requires less frequent stimulation in fibromyalgia patients compared to normal controls.
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Pain
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2004
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1.33
|
27
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Visual analog scales for assessing surgical pain.
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J Am Coll Surg
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2005
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1.32
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28
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Brain activity associated with slow temporal summation of C-fiber evoked pain in fibromyalgia patients and healthy controls.
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Eur J Pain
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2008
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1.32
|
29
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Visceral and somatic hypersensitivity in a subset of rats following TNBS-induced colitis.
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Pain
|
2007
|
1.30
|
30
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Cutaneous C-fiber pain abnormalities of fibromyalgia patients are specifically related to temporal summation.
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Pain
|
2008
|
1.22
|
31
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The dynamic mechanisms of placebo induced analgesia: Evidence of sustained and transient regional involvement.
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Pain
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2008
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1.21
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32
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Body pain area and pain-related negative affect predict clinical pain intensity in patients with fibromyalgia.
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J Pain
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2004
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1.21
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33
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Effects of the N-methyl-D-aspartate receptor antagonist dextromethorphan on temporal summation of pain are similar in fibromyalgia patients and normal control subjects.
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J Pain
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2005
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1.19
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34
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Factors contributing to large analgesic effects in placebo mechanism studies conducted between 2002 and 2007.
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Pain
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2009
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1.18
|
35
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Advanced continuous-contact heat pulse design for efficient temporal summation of second pain (windup).
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J Pain
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2006
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1.13
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36
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Revelation of a personal placebo response: its effects on mood, attitudes and future placebo responding.
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Pain
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2007
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1.10
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37
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Intrarectal lidocaine is an effective treatment for abdominal pain associated with diarrhea-predominant irritable bowel syndrome.
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J Pain
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2005
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1.08
|
38
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Experimental pain models reveal no sex differences in pentazocine analgesia in humans.
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Anesthesiology
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2004
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1.07
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39
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Altering gender role expectations: effects on pain tolerance, pain threshold, and pain ratings.
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J Pain
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2003
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1.07
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40
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Hypnosis modulates activity in brain structures involved in the regulation of consciousness.
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J Cogn Neurosci
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2002
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1.06
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41
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Characterizing individual differences in heat-pain sensitivity.
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Pain
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2005
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1.06
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42
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Visceral and cutaneous hypersensitivity in Persian Gulf war veterans with chronic gastrointestinal symptoms.
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Pain
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2003
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1.05
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43
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Reversal of visceral and somatic hypersensitivity in a subset of hypersensitive rats by intracolonic lidocaine.
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Pain
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2008
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1.05
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44
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Gray matter volumes of pain-related brain areas are decreased in fibromyalgia syndrome.
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J Pain
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2010
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1.04
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45
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Irritable bowel syndrome as a common precipitant of central sensitization.
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Curr Rheumatol Rep
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2002
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1.04
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46
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Thermal and visceral hypersensitivity in irritable bowel syndrome patients with and without fibromyalgia.
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Clin J Pain
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2007
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1.03
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47
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Pain variability in fibromyalgia is related to activity and rest: role of peripheral tissue impulse input.
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J Pain
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2010
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0.99
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48
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Patient-centered perspective on treatment outcomes in chronic pain.
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Pain Med
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2009
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0.99
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49
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Selective up-regulation of NMDA-NR1 receptor expression in myenteric plexus after TNBS induced colitis in rats.
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Mol Pain
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2006
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0.98
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50
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Effects of the N-methyl-D-aspartate receptor on temporal summation of second pain (wind-up) in irritable bowel syndrome.
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J Pain
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2010
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0.96
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51
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Two novel mutations of SCN9A (Nav1.7) are associated with partial congenital insensitivity to pain.
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Eur J Pain
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2010
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0.95
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52
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Spinal NMDA NR1 subunit expression following transient TNBS colitis.
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Brain Res
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2009
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0.95
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53
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Mechanical and heat hyperalgesia highly predict clinical pain intensity in patients with chronic musculoskeletal pain syndromes.
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J Pain
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2012
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0.93
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54
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Visceral and somatic hypersensitivity in TNBS-induced colitis in rats.
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Dig Dis Sci
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2007
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0.91
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55
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Spatial summation of heat pain within and across dermatomes in fibromyalgia patients and pain-free subjects.
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Pain
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2004
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0.90
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56
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Localized colonic stem cell transplantation enhances tissue regeneration in murine colitis.
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J Cell Mol Med
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2012
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0.88
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57
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Phosphorylation of NMDA NR1 subunits in the myenteric plexus during TNBS induced colitis.
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Neurosci Lett
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2006
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0.88
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58
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Patients' direct experiences as central elements of placebo analgesia.
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Philos Trans R Soc Lond B Biol Sci
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2011
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0.87
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59
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What is controlled for in placebo-controlled trials?
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Mayo Clin Proc
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2005
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0.87
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60
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Evidence for sensitized fatigue pathways in patients with chronic fatigue syndrome.
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Pain
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2015
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0.86
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61
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Attenuation of experimental pain by vibro-tactile stimulation in patients with chronic local or widespread musculoskeletal pain.
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Eur J Pain
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2011
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0.85
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62
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Viscerosomatic facilitation in a subset of IBS patients, an effect mediated by N-methyl-D-aspartate receptors.
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J Pain
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2012
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0.85
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63
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Mechanisms of acupuncture analgesia for clinical and experimental pain.
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Expert Rev Neurother
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2006
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0.84
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64
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Supra-threshold scaling, temporal summation, and after-sensation: relationships to each other and anxiety/fear.
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J Pain Res
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2010
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0.84
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65
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Effective connectivity among brain regions associated with slow temporal summation of C-fiber-evoked pain in fibromyalgia patients and healthy controls.
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J Pain
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2012
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0.84
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66
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Placebo manipulations reduce hyperalgesia in neuropathic pain.
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Pain
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2012
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0.84
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67
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An examination of the relationships among recalled, expected, and actual intensity and unpleasantness of delayed onset muscle pain.
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J Pain
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2003
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0.84
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68
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The effect of propofol on thermal pain perception.
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Anesth Analg
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2005
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0.82
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69
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Predictors of the placebo analgesia response in randomized controlled trials of chronic pain: a meta-analysis of the individual data from nine industrially sponsored trials.
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Pain
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2015
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0.81
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70
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Appraisals of pain from controlled stimuli: relevance to quantitative sensory testing.
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Br J Health Psychol
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2007
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0.81
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71
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Heightened pain sensitivity in individuals with signs and symptoms of carpal tunnel syndrome and the relationship to clinical outcomes following a manual therapy intervention.
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Man Ther
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2011
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0.81
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72
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Functional connectivity of the default mode network and its association with pain networks in irritable bowel patients assessed via lidocaine treatment.
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J Pain
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2013
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0.81
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73
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Role of pain catastrophizing during pain processing in a cohort of patients with chronic and severe arthritic knee pain.
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Pain
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2010
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0.79
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74
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Representations of pain in the brain.
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Curr Rheumatol Rep
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2004
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0.79
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75
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Sex differences in common pain events: expectations and anchors.
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J Pain
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2003
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0.77
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76
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Do past pain events systematically impact pain ratings of healthy subjects or fibromyalgia patients?
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J Pain
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2009
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0.77
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77
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Placebo analgesia: widening the scope of measured influences.
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2009
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0.77
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78
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Hypnosis phenomenology and the neurobiology of consciousness.
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Int J Clin Exp Hypn
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2003
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79
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The Relationship between Marital Status and Psychological Resilience in Chronic Pain.
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Pain Res Treat
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2013
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0.76
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80
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Reply to commentary.
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J Pain
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2013
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0.75
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81
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Importance of Measuring Placebo Factors in Complex Clinical Trials.
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2008
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0.75
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82
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Role of Placebo Factors in Clinical Trials with Special Focus on Enrichment Designs.
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2008
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0.75
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83
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New facts and improved ethical guidelines for placebo analgesia.
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J Pain
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2005
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0.75
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84
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Dopaminergic tone does not influence pain levels during placebo interventions in patients with chronic neuropathic pain.
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Pain
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2017
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0.75
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