Journal club presentation by M.Parto

Task-specific signal transmission from prefrontal cortex in visual selective attention

Yosuke Morishima1, Rei Akaishi1, Yohei Yamada1, Jiro Okuda2, Keiichiro Toma1 & Katsuyuki Sakai1

Link to paper

Abstract

Our voluntary behaviors are thought to be controlled by top-down signals from the prefrontal cortex that modulate neural
processing in the posterior cortices according to the behavioral goal. However, we have insufficient evidence for the causal effect of the top-down signals. We applied a single-pulse transcranial magnetic stimulation over the human prefrontal cortex and measured the strength of the top-down signals as an increase in the efficiency of neural impulse transmission. The impulse induced by the stimulation transmitted to different posterior visual areas depending on the domain of visual features to which subjects attended. We also found that the amount of impulse transmission was associated with the level of attentional preparation and the performance of visual selective-attention tasks, consistent with the causal role of prefrontal top-down signals.

About This Event

Start date12/20/2017 10:00
End date12/20/2017 12:00

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