Modulation of the Earliest Component of the Human VEP by Spatial Attention: An Investigation of Task Demands.

ABSTRACT: Spatial attention modulations of initial afferent activity in area V1, indexed by the first component "C1" of the human visual evoked potential, are rarely found. It has thus been suggested that early modulation is induced only by special task conditions, but what these conditions are remains unknown. Recent failed replications-findings of no C1 modulation using a certain task that had previously produced robust modulations-present a strong basis for examining this question. We ran 3 experiments, the first to more exactly replicate the stimulus and behavioral conditions of the original task, and the second and third to manipulate 2 key factors that differed in the failed replication studies: the provision of informative performance feedback, and the degree to which the probed stimulus feat

SUBMITTER: Mohr KS 

PROVIDER: S-EPMC8152881 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature