Right-hemisphere motor facilitation by self-descriptive personality-trait words

The emergent picture from the literature on the processing of self‐related information suggests that in addition to the neural mechanisms involved in recognizing one's own face, there may also be neural representations of the self that are modality independent and favour the right hemisphere. W...

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Veröffentlicht in:The European journal of neuroscience 2005-04, Vol.21 (7), p.2000-2006
Hauptverfasser: Molnar-Szakacs, Istvan, Uddin, Lucina Q., Iacoboni, Marco
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container_end_page 2006
container_issue 7
container_start_page 2000
container_title The European journal of neuroscience
container_volume 21
creator Molnar-Szakacs, Istvan
Uddin, Lucina Q.
Iacoboni, Marco
description The emergent picture from the literature on the processing of self‐related information suggests that in addition to the neural mechanisms involved in recognizing one's own face, there may also be neural representations of the self that are modality independent and favour the right hemisphere. We used focal, single‐pulse transcranial magnetic stimulation in human subjects to assess cortical excitability during covert reading of self‐descriptive personality‐trait words. We hypothesized that the right hemisphere would show a greater overall facilitation to personality‐trait words than the left hemisphere. Overall, personality‐trait words led to significantly greater motor facilitation in the right hemisphere than in the left hemisphere. In addition, words rated as ‘never’ self‐characteristic yielded significant right hemisphere facilitation, and words rated as ‘always’ self‐characteristic showed a similar trend. The results are discussed in terms of the notion that the right hemisphere plays a dominant role in both self‐relevant processing and the processing of affective stimuli.
doi_str_mv 10.1111/j.1460-9568.2005.04019.x
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source Wiley Online Library - AutoHoldings Journals; MEDLINE
subjects Adult
affect
Analysis of Variance
Brain Mapping
Ego
Electric Stimulation
Evoked Potentials, Motor - physiology
Evoked Potentials, Motor - radiation effects
Female
Functional Laterality - drug effects
Functional Laterality - physiology
human
Humans
language
laterality
Magnetics
Male
Motor Cortex - physiology
Motor Cortex - radiation effects
Neuropsychological Tests - statistics & numerical data
Recognition (Psychology) - physiology
Recognition (Psychology) - radiation effects
Self Concept
self-recognition
TMS
title Right-hemisphere motor facilitation by self-descriptive personality-trait words
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