Work

Differential contributions of the C1 ERP and broadband high-frequency activity to visual processing

Year: 2024

Type: article

Abstract: Whether the broadband high-frequency activity (HFA) represents exclusively feedforward or feedback processing remains unclear. In this study, we compared the response characteristics of the HFA-magnetoencephalographic (MEG) and the C1-EEG component to systematic contrast modulations of task-irrelevant visual stimulation. Our findings reveal that the more sustained HFA follows the C1 component and, unlike the C1, is not modulated by task-irrelevant contrast differences. This timing of the HFA modulation suggests that HFA encompasses both feedforward and feedback processing.

Source: Journal of Neurophysiology

DOI: 10.1152/jn.00292.2024

Authors: Paul Schmid, Christoph Reichert, Robert T. Knight, Stefan Dürschmid

Institutions: Leibniz Institute for Neurobiology, University of California, Berkeley

Language: English

Topic: Visual perception and processing mechanisms

Subfield: Cognitive Neuroscience

Field: Neuroscience

Domain: Life Sciences

Open Access status: hybrid

Funder: Deutsche Forschungsgemeinschaft

Awards: G1147013835, G140313323