Inter-trial neuronal activity in inferior temporal cortex: a putative vehicle to generate long-term visual associations View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1998-08

AUTHORS

Volodya Yakovlev, Stefano Fusi, Elisha Berman, Ehud Zohary

ABSTRACT

When monkeys perform a delayed match-to-sample task, some neurons in the anterior inferotemporal cortex show sustained activity following the presentation of specific visual stimuli, typically only those that are shown repeatedly. When sample stimuli are shown in a fixed temporal order, the few images that evoke delay activity in a given neuron are often neighboring stimuli in the sequence, suggesting that this delay activity may be the neural correlate of associative long-term memory. Here we report that stimulus-selective sustained activity is also evident following the presentation of the test stimulus in the same task. We use a neural network model to demonstrate that persistent stimulus-selective activity across the intertrial interval can lead to similar mnemonic representations (distributions of delay activity across the neural population) for neighboring visual stimuli. Thus, inferotemporal cortex may contain neural machinery for generating long-term stimulus–stimulus associations. More... »

PAGES

310-317

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/1131

DOI

http://dx.doi.org/10.1038/1131

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1021881118

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/10195165


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