Resistance of peripheral and sub-cortical somatosensory pathway to electrical noise.

摘要: The somatosensory system is vulnerable to large amounts of noise distortion. But how does the central nervous distinguish peripheral inputs which carry information brain from that not possess information? To address this question we studied effect electrical stimulation median nerve on tactile spatial frequency perception in healthy subjects and Parkinson's disease (PD) patients. Subjects were categorized two groups (healthy PD patients) asked report if a test pattern (TFP) was same as reference TFP given other hand. In each case either present or absent hand holding pattern. We observed no impairment performance presence nerve. This result together with previous work direct relay nucleus thalamus (Abbassian et al., Stereotact Funct Neurosurg 76: 19–28, 2001) in...