Year: 2015
Type: dissertation
Abstract: The ability to integrate information over time is fundamental to cognition. Any sensory experience, from object recognition to speech comprehension, utilizes this ability. Contrary to traditional models in which memory and perception are supported by separate circuits, recent work has demonstrated perceptual circuits can integrate information over time, as their response to an input at one moment may depend on what happened seconds earlier. We implemented a spiking model utilizing spike-timing dependent synaptic plasticity in a localized visual cortical circuit to investigate how sensory circuits are able to integrate information over time. We demonstrate that a lengthening circuit memory develops as a result of repeated exposure to a stimulus and that repeated exposure also leads to stronger synapses between neurons processing the input as well as associating sequential stimuli.
Source: TSpace (University of Toronto)
Author: Kevin Himberger
Language: English
Subfield: Cognitive Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2607247287