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Task-Correlated Cortical Asymmetry and Intra- and Inter-Hemispheric Separation.

Abstract：

:Cerebral lateralization is expressed at both the structural and functional levels, and can exist as either a stable characteristic or as a dynamic feature during behavior and development. The anatomically relatively simple olfactory system demonstrates lateralization in both human and non-human animals. Here, we explored functional lateralization in both primary olfactory cortex - a region critical for odor memory and perception- and orbitofrontal cortex (OFC) - a region involved in reversal learning- in rats performing an odor learning and reversal task. We find significant asymmetry in both olfactory and orbitofrontal cortical odor-evoked activity, which is expressed in a performance- and task-dependent manner. The emergence of learning-dependent asymmetry during reversal learning was associated with decreased functional connectivity both between the bilateral OFC and between the OFC-olfactory cortex. The results suggest an inter-hemispheric asymmetry and olfactory cortical functional separation that may allow multiple, specialized processing circuits to emerge during a reversal task requiring behavioral flexibility.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Cohen Y,Wilson DA

doi

10.1038/s41598-017-15109-x

subject

Has Abstract

pub_date

2017-11-06 00:00:00

pages

14602

issue

1

issn

2045-2322

pii

10.1038/s41598-017-15109-x

journal_volume

7

pub_type

杂志文章

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