Skip navigation

Transcranial alternating current stimulation to the inferior parietal lobe decreases Mu suppression to egocentric, but not allocentric hand movements

Transcranial alternating current stimulation to the inferior parietal lobe decreases Mu suppression to egocentric, but not allocentric hand movements

Berntsen, Monica B., Cooper, Nicholas R. and Romei, Vincenzo (2017) Transcranial alternating current stimulation to the inferior parietal lobe decreases Mu suppression to egocentric, but not allocentric hand movements. Neuroscience, 344. pp. 124-132. ISSN 0306-4522 (doi:10.1016/j.neuroscience.2016.12.045)

[img]
Preview
PDF (Author Accepted Manuscript)
16156 BERNTSEN_Inferior_Parietal_Lobe_2017.pdf - Accepted Version

Download (405kB) | Preview
[img] PDF (Email of Acceptance)
16156 BERNSTEN_Acceptance_Letter_2016.pdf - Additional Metadata
Restricted to Repository staff only

Download (110kB) | Request a copy

Abstract

Egocentric vs. allocentric perspective during observation of hand movements has been related to self-other differentiation such that movements observed from an egocentric viewpoint have been considered as self-related while movements observed from an allocentric viewpoint have been considered as belonging to someone else. Correlational studies have generally found that egocentric perspective induces greater neurophysiological responses and larger behavioural effects compared to an allocentric perspective. However, recent studies question previous findings by reporting greater (μ) suppression and greater transcranial magnetic stimulation (TMS) induced motor-evoked potentials (MEPs) during observation of allocentric compared to egocentric movements. Furthermore, self-other differentiation has been generally related to activity within the inferior parietal lobe (IPL), but direct evidence for a causal and functional role of IPL in self-other differentiation is lacking. The current study was therefore designed to investigate the influence that IPL exerts on self-other differentiation. To this aim, we measured the impact of individually adjusted alpha-tuned transcranial alternating current stimulation (tACS) applied over IPL on μ-suppression during hands movement observation from an egocentric and allocentric perspective. Electroencephalography (EEG) was recorded during movement observation before and immediately after tACS. Results demonstrated that tACS decreased μ-reactivity over sensorimotor (but not visual) regions for egocentric (but not allocentric) movement observation providing direct evidence for a causal involvement of IPL in the observation of self- but not other-related hands movement.

Item Type: Article
Uncontrolled Keywords: EEG; tACS; Self-other differentiation; Perspectives; IPL
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Faculty / Department / Research Group: Faculty of Education & Health
Faculty of Education & Health > Department of Psychology, Social Work & Counselling
Last Modified: 04 Jan 2018 01:38
Selected for GREAT 2016: None
Selected for GREAT 2017: GREAT a
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/16156

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics