A Specialized Odor Memory Buffer in Primary Olfactory CortexReport as inadecuate




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Background

The neural substrates of olfactory working memory are unknown. We addressed the questions of whether olfactory working memory involves a verbal representation of the odor, or a sensory image of the odor, or both, and the location of the neural substrates of these processes.

Methodology-Principal Findings

We used functional magnetic resonance imaging to measure activity in the brains of subjects who were remembering either nameable or unnameable odorants. We found a double dissociation whereby remembering nameable odorants was reflected in sustained activity in prefrontal language areas, and remembering unnameable odorants was reflected in sustained activity in primary olfactory cortex.

Conclusions-Significance

These findings suggest a novel dedicated mechanism in primary olfactory cortex, where odor information is maintained in temporary storage to subserve ongoing tasks.



Author: Christina Zelano , Jessica Montag, Rehan Khan, Noam Sobel

Source: http://plos.srce.hr/



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