体感刺激激活人脑听觉皮层

摘要

目的 初步探讨体感刺激是否可以激活听觉皮层,为听觉皮层作为多重感觉皮层提供证据.方法 5例颞叶占位的患者术中暴露颞上回后,分别接受声音(100 dB)和体感刺激,通过光学成像在红光下(610±10)nm观察初级、次级听觉皮层(BA41、42)反射内源光信号变化特征.结果 红光(610±lO)nm下我们观察到听觉刺激后听觉皮层(BA41、42)明显激活(n=5),体感刺激后可观察到和听觉刺激时相似区域的激活,且响应的方式与听觉刺激无明显差异(n=4).结论 体感刺激可激活听觉皮层,这可能是听觉皮层作为多重感觉皮层的一个证据.%Objective This paper is to explore whether somatosensory stimulation could activate human auditory cortex (AI) and provide a new evidence for the multisensory center.Methods Intrinsic optical signals from the superior temporal gyrus were measured intraoperatively in five anesthetized patients with temporal lobe tumors.We detected the activation of the auditory cortex ( BA41、42) during auditory and somatosensory stimuli respectively under red illuminating light (610 ± 10 ) nm.Results Under the illumination of red light wavelength we clearly detected hemodynamic responses in the primary and secondary auditory cortex ( BA 41,42) by the stimulus of the 100 dB clicks ( n =5) and similar response area during the somatosensory paradigm ( n =4).Conclusion Somatosensory stimulation can activate the auditory cortex which may be a new evidence of the multisensory center.