All talk? Challenging the use of left-temporal EEG alpha oscillations as valid measures of verbal processing and conscious motor control

Parr, Johnny V. V., Gallicchio, Germano, Harrison, Neil R., Johnen, Ann-Kathrin and Wood, Greg (2020) All talk? Challenging the use of left-temporal EEG alpha oscillations as valid measures of verbal processing and conscious motor control. Biological Psychology, 155. ISSN 0301-0511

[img] PDF (Accepted_Manuscript) - Submitted Version
Restricted to Repository staff only until 8 August 2021.

Download (3MB) | Request a copy

Abstract

This study tested the validity of EEG left-temporal alpha power and upper-alpha T7-Fz connectivity as indices of verbal activity and conscious motor control. Participants (n = 20) reached for, and transported, a jar under three conditions: a control condition and two self-talk conditions aimed at eliciting either task-unrelated verbal processing or task-related conscious control, while EEG and hand kinematics were recorded. Compared to the control condition, both self-talk conditions increased self-reported verbal processing, but only the task-related self-talk condition increased left-temporal activity (i.e., alpha power decreased). However, as cortical activity increased across the entire scalp topography, conscious control likely elicits a multitude of processes that may not be explained by left-temporal activity or verbal processing alone, but by a widespread decrease in neural efficiency. No significant effects for T7-Fz connectivity were detected. Results suggest that left-temporal EEG alpha oscillations are unlikely to uniquely reflect verbal processing during conscious motor control.

Item Type: Article
Faculty \ School: Faculty of Social Sciences > School of Psychology
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 12 Aug 2020 23:54
Last Modified: 14 Sep 2020 23:51
URI: https://ueaeprints.uea.ac.uk/id/eprint/76410
DOI: 10.1016/j.biopsycho.2020.107943

Actions (login required)

View Item View Item