Neurophysiological sand pathophysiological studies of the human brain function of sensory processing

在2002年至2003年的研究期间，我使用诱发电位和诱发磁场技术研究了人脑的感觉加工。对于体感加工，我们发现大脑可以处理施加在外周高达1000赫兹的高频刺激，尽管受试者根本不能识别每个高频刺激。对高频刺激的反应能力是时间辨别的基本功能，而时间辨别是人类的躯体辨别能力之一。我研究了身体各部位的时间分辨，以及随着年龄的增长而产生的病理变化。与体感系统类似，我研究了视觉功能及其时间分辨率。在给予非常短的视觉刺激的情况下，研究了大脑对潜伏期刺激的反应。我的结论是，阈下刺激会影响大脑对阈上视觉刺激的反应。在躯体感觉和视觉过程中，大脑对阈下刺激的反应可能是重要的，并可能影响刺激后的认知和行为。

During the term of the research (2002-2003), I investigated the sensory processing in the human brain, using evoked potential and evoked magnetic field techniques. For the somatosensory processing, we found the brain could process high frequency stimulation applied on the peripheral up to 1000Hz, although the subject could not recognized each high frequent stimulation at all. The ability to respond to high frequency stimulation was a basic function for the temporal discrimination, which is one of the somesthetic discrimination of human. I studied the temporal discrimination on various part body and also pathological changes by aging. Similarly to the somatosensory system, I investigated the visual function and its temporal resolution. Giving a very short visual stimulus, the brain response for the subliminal stimulation was investigated. I concluded that the subliminal could affect the brain response to the supraliminal visual stimulation. Both in the somatosensory and visual processes, brain responses to the subliminal stimulation might be important and might affect the cognition and behavior after the stimulation.