Relationship between sustained unilateral hand clench, emotional state, line bisection performance, and prefrontal cortical activity

A functional near-infrared spectroscopy study

Ruth Propper, Kyle Dodd, Stephen D. Christman, Tad T. Brunyé

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

Sustained unilateral hand clenching alters perceptual processing and affective/motivational state, with these alterations presumed to reflect increased hemispheric activity contralateral to the side of motor movement. However, data from electroencephalographic and imaging studies are contradictory regarding the relationship between sustained hand clenching and brain activity. In order to investigate the relationship between brain activity, sustained unilateral hand clenching, and changes in affect and perceptual processing, frontal hemispheric activity was measured via functional near-infrared spectroscopy (fNIRS), using derived O2Hb prior to, during, and post-sustained unilateral hand clench. Participants’ mood and spatial perception were recorded pre- and post-clenching. Sustained unilateral hand clenching altered brain activity and mood, but not spatial perception. Results revealed increased O2Hb bilaterally following sustained unilateral hand clenching, relative to baseline, regardless of hand. In agreement with previous fNIRS studies, sustained unilateral hand clenching resulted in greater ipsilateral, compared with contralateral, O2Hb. An interaction between side of hand clench and change in mood was in the direction predicted by theories of hemispheric lateralization of emotion: Following left-hand clenching, individuals became more affectively negative, and following right-hand clenching, they became more affectively positive.

Original languageEnglish
Pages (from-to)671-689
Number of pages19
JournalLaterality
Volume22
Issue number6
DOIs
StatePublished - 2 Nov 2017

Fingerprint

Near-Infrared Spectroscopy
Hand
Brain
Emotional State
Infrared Spectroscopy
Mood
Emotions

Keywords

  • emotion
  • fNIRS
  • frontal cortex
  • hand clench

Cite this

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title = "Relationship between sustained unilateral hand clench, emotional state, line bisection performance, and prefrontal cortical activity: A functional near-infrared spectroscopy study",
abstract = "Sustained unilateral hand clenching alters perceptual processing and affective/motivational state, with these alterations presumed to reflect increased hemispheric activity contralateral to the side of motor movement. However, data from electroencephalographic and imaging studies are contradictory regarding the relationship between sustained hand clenching and brain activity. In order to investigate the relationship between brain activity, sustained unilateral hand clenching, and changes in affect and perceptual processing, frontal hemispheric activity was measured via functional near-infrared spectroscopy (fNIRS), using derived O2Hb prior to, during, and post-sustained unilateral hand clench. Participants’ mood and spatial perception were recorded pre- and post-clenching. Sustained unilateral hand clenching altered brain activity and mood, but not spatial perception. Results revealed increased O2Hb bilaterally following sustained unilateral hand clenching, relative to baseline, regardless of hand. In agreement with previous fNIRS studies, sustained unilateral hand clenching resulted in greater ipsilateral, compared with contralateral, O2Hb. An interaction between side of hand clench and change in mood was in the direction predicted by theories of hemispheric lateralization of emotion: Following left-hand clenching, individuals became more affectively negative, and following right-hand clenching, they became more affectively positive.",
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Relationship between sustained unilateral hand clench, emotional state, line bisection performance, and prefrontal cortical activity : A functional near-infrared spectroscopy study. / Propper, Ruth; Dodd, Kyle; Christman, Stephen D.; Brunyé, Tad T.

In: Laterality, Vol. 22, No. 6, 02.11.2017, p. 671-689.

Research output: Contribution to journalArticleResearchpeer-review

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