Low frequency repetitive transcranial magnetic stimulation to right parietal cortex disrupts perception of briefly presented stimuli

Howard, C.J. and Boulton, H and Bedwell, Stacey A. and Boatman, C.A. (2019) Low frequency repetitive transcranial magnetic stimulation to right parietal cortex disrupts perception of briefly presented stimuli. Perception. (In Press)

[img] Text
Howard et al..docx - Accepted Version

Download (416kB)

Abstract

Right parietal cortex has recently been linked to the temporal resolution of attention. We therefore sought to investigate whether disruption to right parietal cortex would affect attention to visual stimuli presented for brief durations. Participants performed a visual discrimination task before and after 10 minutes rTMS (1Hz) to right or central parietal cortex as well as 20 minutes after the second block. Participants reported the spatial frequency of a masked Gabor patch presented for a brief duration of 60, 120 or 240ms. We calculated error magnitudes by comparing accuracy to a guessing model. We then compared error magnitudes to blocks with no stimulation, producing a measure of baselined performance. Baselined performance was poorer at longer stimulus durations after right parietal than central parietal stimulation, suggesting that right parietal cortex is involved in attention to briefly presented stimuli, particularly in situations where rapid accumulation of visual evidence is needed.

Item Type: Article
Subjects: C800 Psychology
Divisions: Faculty of Business, Law and Social Sciences > School of Social Sciences > Dept. Psychology
REF UoA Output Collections > REF2021 UoA 04: Psychology, Psychiatry and Neuroscience
Depositing User: Stacey Bedwell
Date Deposited: 06 Feb 2019 15:56
Last Modified: 06 Feb 2019 15:56
URI: http://www.open-access.bcu.ac.uk/id/eprint/7004

Actions (login required)

View Item View Item

Research

In this section...