Seltzer S F, Yarczower M, Woo R, Seltzer J L
Graduate School of Arts and Sciences, Department of Psychology, Bryn Mawr College, PA 19010.
Percept Psychophys. 1992 May;51(5):500-3. doi: 10.3758/bf03211645.
Previous investigations indicated that thresholds to nonpainful tactile stimuli were elevated in chronic-pain patients when compared with pain-free individuals (Seltzer & Seltzer, 1986; Seltzer et al., 1988). The present study attempted to determine whether thresholds to tactual and visual stimuli also were elevated by chronic pain. Furthermore, lateralization of the pain effect on tactile thresholds was assessed by obtaining thresholds from both left and right arms. A decrease in tactile sensitivity to nonpainful stimuli in chronic-pain patients was confirmed, but laterality of the effect was not demonstrated. Visual thresholds were not significantly affected by chronic pain. The data in the present study, taken together with other data, support the proposition that pain does not affect right hemispheric processes more than left hemispheric processes.
先前的调查表明，与无疼痛个体相比，慢性疼痛患者对非疼痛性触觉刺激的阈值升高（塞尔策和塞尔策，1986年；塞尔策等人，1988年）。本研究试图确定慢性疼痛是否也会提高触觉和视觉刺激的阈值。此外，通过获取左右臂的阈值来评估疼痛对触觉阈值影响的侧化情况。慢性疼痛患者对非疼痛性刺激的触觉敏感性降低得到了证实，但未证明该效应的侧化情况。视觉阈值未受到慢性疼痛的显著影响。本研究中的数据与其他数据一起支持了这样的观点，即疼痛对右半球过程的影响并不比对左半球过程的影响更大。
