On the refractoriness of somesthetic temporal acuity |
| |
Authors: | William R. Uttal Madelon Krissoff |
| |
Affiliation: | 1. The University of Michigan, USA
|
| |
Abstract: | Preconditioning, with a burst of electrical pulse stimuli elevates the threshold for temporal acuity as measured with a technique requiring the S to detect a short gap in an otherwise regular burst of similar stimuli. Only a small amount of backward inhibition can be observed. The temporal duration of the inhibitory effect (up to 700 msec.) suggests that repetitive after-discharges of second-order afferents in Ike spinal cord may underlie this behavioral measure by actually filling in the intervals which are used by the S to make the judgment. The phenomenon is thus thought to be a disruption of a true temporal judgment rather than one indirectly mediated by an amplitude judgment, and as such it represents a significant datum on the temporal resolving power of time dimensions of neural coding. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |