Individual resting-state alpha peak frequency and within-trial changes in alpha peak frequency both predict visual dual-pulse segregation performance

Author:

Drewes Jan12ORCID,Muschter Evelyn23,Zhu Weina24,Melcher David25

Affiliation:

1. Institute of Brain and Psychological Sciences , Sichuan Normal University, 610066 Chengdu, China

2. Department of Psychology and Center for Mind/Brain Sciences , University of Trento, 38068 Rovereto, Italy

3. Centre for Tactile Internet with Human-in-the-Loop (CeTI) , Technische Universität Dresden, 01069 Dresden, Germany

4. School of Information Science , Yunnan University, 650091 Kunming, China

5. Psychology Program , Division of Science, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates

Abstract

Abstract Although sensory input is continuous, information must be combined over time to guide action and cognition, leading to the proposal of temporal sampling windows. A number of studies have suggested that a 10-Hz sampling window might be involved in the “frame rate” of visual processing. To investigate this, we tested the ability of participants to localize and enumerate 1 or 2 visual flashes presented either at near-threshold or full-contrast intensities, while recording magnetoencephalography. The inter-stimulus interval (ISI) between the 2 flashes was varied across trials. Performance in distinguishing between 1 and 2 flashes was linked to the alpha frequency, both at the individual level and trial-by-trial. Participants with a higher resting-state alpha peak frequency showed the greatest improvement in performance as a function of ISI within a 100-ms time window, while those with slower alpha improved more when ISI exceeded 100 ms. On each trial, correct enumeration (1 vs. 2) performance was paired with faster pre-stimulus instantaneous alpha frequency. Our results suggest that visual sampling/processing speed, linked to peak alpha frequency, is both an individual trait and can vary in a state-dependent manner.

Funder

European Research Council

High-level Foreign Expert Grant

National Natural Science Foundation of China

Publisher

Oxford University Press (OUP)

Subject

Cellular and Molecular Neuroscience,Cognitive Neuroscience

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