The right hand knows what the left hand is feeling
The right hand knows what the left hand is feeling
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DOI：
10.1007/s00221-004-2187-4
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发表时间：
2005-04-01
影响因子：
2
通讯作者：
Preissl, H
中科院分区：
文献类型：
--
作者：
Braun, C;Hess, H;Preissl, H
描述微弱的触觉刺激到身体的不同区域的不正确定位的错误定位配置文件已被证明可以提供对触觉刺激的处理的洞察。通过研究左手刺激对右手知觉的干扰，对15名被试的大脑半球间躯体感觉加工进行了研究。在不同的条件下，阈上干扰刺激被施加到左手拇指或小指的测试刺激的应用程序之前的200或500毫秒的右手。数据显示，施加到左手的干扰刺激极大地改变了施加到右侧的刺激的定位反应。刺激左手拇指产生了更多的错误定位到右手拇指。类似地，刺激左小指导致定位响应向右无名指转移。研究结果支持这一假设，即来自身体不同侧面的体感信息的相互作用遵循躯体组织。
The mislocalization profile, describing incorrect localization of faint tactile stimuli to different regions of the body, has been shown to provide insight into the processing of tactile stimuli. Interhemispheric somatosensory processing was examined in 15 subjects by studying the interference of left-hand stimulation on right-hand perception. In different conditions supra-threshold interference stimuli were applied to the left thumb or little finger either 200 or 500 ms prior to the application of a test stimulus on the right hand. Data show that interference stimuli applied to the left hand massively altered localization responses for stimuli applied to the right side. Stimulating the left thumb yielded an increased number of mislocalizations to the right thumb. Similarly, stimulating the left little finger caused a shift in localization responses towards the right ring finger. Results support the hypothesis that interaction of somatosensory information originating from different sides of the body follows a somatotopic organization.