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  Pre-stimulus alpha activity modulates face and object processing in the intra-parietal sulcus, a MEG study

Dehaghani, N. S., Maess, B., Khosrowabadi, R., Lashgari, R., Braeutigam, S., & Zarei, M. (2022). Pre-stimulus alpha activity modulates face and object processing in the intra-parietal sulcus, a MEG study. Frontiers in Human Neuroscience, 16: 831781. doi:10.3389/fnhum.2022.831781.

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 Creators:
Dehaghani, Narjes Soltani1, 2, Author
Maess, Burkhard3, Author              
Khosrowabadi, Reza2, Author
Lashgari, Reza1, Author
Braeutigam, Sven4, Author
Zarei, Mojtaba1, 5, Author
Affiliations:
1Institute of Medical Science and Technology, Shahid Beheshti University, Tehran, Iran, ou_persistent22              
2Institute for Cognitive and Brain Sciences, Shahid Beheshti University, Tehran, Iran, ou_persistent22              
3Methods and Development Group Brain Networks, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205650              
4Oxford Centre for Human Brain Activity (OHBA), University of Oxford, United Kingdom, ou_persistent22              
5Department of Clinical Research, University of Southern Denmark, Odense, Denmark, ou_persistent22              

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Free keywords: Brain oscillations; Face perception; Intra-parietal sulcus; Magnetoencephalography; Pre-stimulus alpha activity
 Abstract: Face perception is crucial in all social animals. Recent studies have shown that pre-stimulus oscillations of brain activity modulate the perceptual performance of face vs. non-face stimuli, specifically under challenging conditions. However, it is unclear if this effect also occurs during simple tasks, and if so in which brain regions. Here we used magnetoencephalography (MEG) and a 1-back task in which participants decided if the two sequentially presented stimuli were the same or not in each trial. The aim of the study was to explore the effect of pre-stimulus alpha oscillation on the perception of face (human and monkey) and non-face stimuli. Our results showed that pre-stimulus activity in the left occipital face area (OFA) modulated responses in the intra-parietal sulcus (IPS) at around 170 ms after the presentation of human face stimuli. This effect was also found after participants were shown images of motorcycles. In this case, the IPS was modulated by pre-stimulus activity in the right OFA and the right fusiform face area (FFA). We conclude that pre-stimulus modulation of post-stimulus response also occurs during simple tasks and is therefore independent of behavioral responses.

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Language(s): eng - English
 Dates: 2021-12-082022-04-082022-05-02
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.3389/fnhum.2022.831781
Other: eCollection 2022
PMID: 35585993
PMC: PMC9108229
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Project name : -
Grant ID : 203139/Z/16/Z
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Funding organization : Wellcome Trust

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Title: Frontiers in Human Neuroscience
  Abbreviation : Front Hum Neurosci
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Frontiers Research Foundation
Pages: - Volume / Issue: 16 Sequence Number: 831781 Start / End Page: - Identifier: ISSN: 1662-5161
CoNE: https://pure.mpg.de/cone/journals/resource/1662-5161