PMID- 14659531
OWN - NLM
STAT- MEDLINE
DCOM- 20040218
LR  - 20210112
IS  - 0304-3959 (Print)
IS  - 0304-3959 (Linking)
VI  - 106
IP  - 3
DP  - 2003 Dec
TI  - Spatial summation of pressure pain: effect of body region.
PG  - 471-480
LID - 10.1016/j.pain.2003.09.010 [doi]
AB  - The characteristics of spatial summation of pressure pain are not clear. Pressure 
      pain threshold (PPT) and perceived pressure pain intensity were measured in the 
      hand, painfree back and myofascial trigger points (MTPs) in the back, using three 
      different stimulus areas (0.5, 1 and 2 cm(2)). PPT decreased and perceived pain 
      increased significantly with an increase in stimulation area in all the regions 
      (e.g. PPT in the back, from 406+/-168 to 205+/-102kPa, P<0.0001). The magnitude 
      of spatial summation of pressure pain was not significantly different between the 
      regions. However, PPT in the back was significantly higher compared to the hand 
      and MTPs (e.g. for 2 cm(2): mean of 205+/-102 vs 175+/-75 and 159+/-72kPa, 
      P<0.01, respectively). Irrespective of body region, the quality of pain evoked 
      with the large areas (1 and 2 cm(2)) was of pressure whereas in the small area 
      (0.5 cm(2)) it was perceived as a prick. In conclusion, both PPT and perceived 
      pressure pain intensity are subject to a considerable spatial summation in all 
      the regions tested. The quality of pressure-evoked pain is probably determined by 
      this spatial summation. Body region significantly affects the PPT level for a 
      fixed stimulation area but not the magnitude of its spatial summation for areas 
      up to 2 cm(2), which are probably within the receptive field of single spinal 
      nociceptive neurons.
FAU - Defrin, Ruth
AU  - Defrin R
AD  - Department of Physical Therapy, Sackler School of Medicine, Tel-Aviv University, 
      Ramat Aviv 69978, Israel.
FAU - Ronat, Amit
AU  - Ronat A
FAU - Ravid, Arnon
AU  - Ravid A
FAU - Peretz, Chava
AU  - Peretz C
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - Pain
JT  - Pain
JID - 7508686
SB  - IM
MH  - Adult
MH  - Female
MH  - Humans
MH  - Linear Models
MH  - Male
MH  - Middle Aged
MH  - Pain/*psychology
MH  - Pain Measurement/*methods
MH  - Pain Threshold/*psychology
MH  - Pressure
MH  - *Spatial Behavior
EDAT- 2003/12/09 05:00
MHDA- 2004/02/19 05:00
CRDT- 2003/12/09 05:00
PHST- 2003/12/09 05:00 [pubmed]
PHST- 2004/02/19 05:00 [medline]
PHST- 2003/12/09 05:00 [entrez]
AID - 00006396-200312000-00029 [pii]
AID - 10.1016/j.pain.2003.09.010 [doi]
PST - ppublish
SO  - Pain. 2003 Dec;106(3):471-480. doi: 10.1016/j.pain.2003.09.010.