Effects of eccentricity on the attention-related N2pc component of the event-related potential waveform.

ABSTRACT: The N2pc ERP component has been widely used as a measure of lateralized visual attention. It is characterized by a negativity contralateral to the attended location or target, and it is thought to reflect contralaterally enhanced processing of attended information in intermediate to high levels of the ventral visual pathway. Given that the receptive fields in these areas often extend a few degrees into the ipsilateral hemifield, we might expect that near-midline stimuli would be processed by both the contralateral and ipsilateral hemispheres, resulting in a diminished N2pc. However, little is known about the effect of eccentricity on the N2pc component. To address this gap in knowledge, we recorded the EEG while participants performed a discrimination task with stimuli presented at one of

SUBMITTER: Papaioannou O 

PROVIDER: S-EPMC7160023 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature