کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2576534 | 1561356 | 2007 | 4 صفحه PDF | دانلود رایگان |
Accumulated evidence suggests that auditory cortical neurons exhibit sustained or onset responses to sound stimuli. In general, onset neurons respond to many stimuli with transient discharges across a relatively large population of neurons and precede sustained responses by several tens of milliseconds. In contrast, sustained neurons respond to specific stimuli with sustained discharges across a relatively small population of neurons. By simulating a neural network model, we investigated how widespread onset discharges influence sustained neuronal responses and its significance in auditory information processing. The activation of onset-responsive neurons effectively accelerated the reaction time of sustained-responsive neurons to a vowel sound stimulus, for which the overall activation of the network triggered by onset responses was essential. We suggest that the activation of onset-responsive neurons may allow sustained-responsive neurons to be activated (or depolarized) to a subthreshold for action potential generation, by which the sustained-responsive neurons can rapidly react to the applied stimulus.
Journal: International Congress Series - Volume 1301, July 2007, Pages 274–277