Manual dexterity: Functional lateralisation patterns and motor efficiency

Abstract

A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Manual tasks are an important goal-directed ability. In this EEG work, we studied how handedness affects the hemispheric lateralisation patterns during performance of visually-driven movements with either hand. The neural correlates were assessed by means of EEG coherence whereas behavioural output was measured by motor error. The EEG data indicated that left-and right-handers showed distinct recruitment patterns. These involved local interactions between brain regions as well as more widespread associations between brain systems. Despite these differences, brain-behaviour correlations highlighted that motor efficiency depended on left-sided brain regions across groups. These results suggest that skilled hand motor control relies on different neural patterns as a function of handedness whereas behavioural efficiency is linked with the left hemisphere. In conclusion, the present findings add to our understanding about principles of lateralised organisation as a function of handedness.

Individual Differences and Hemispheric Asymmetries for Language and Spatial Attention

“…Approximately 90% of humans are right-handed whereas 10% are left-handed; a motor asymmetry that has been relatively stable throughout history and across cultures (Coren and Porac, 1977 ; Annett, 2002 ). In this respect, handedness selectively regulates the neural processing mechanisms of the motor system (Klöppel et al, 2007 ; Martin et al, 2011 ; Reid and Serrien, 2012 ; Pool et al, 2014 ; Serrien and Sovijärvi-Spapé, 2016 ). Furthermore, left-hemispheric language lateralization associates with handedness in 90%–95% of right-handers and 70%–85% of left-handers (Pujol et al, 1999 ; Knecht et al, 2000 ; Flöel et al, 2005 ; Perlaki et al, 2013 ; Mazoyer et al, 2014 ), indicating higher variation due to left-handedness.…”

The Neuropsychology of Movement and Movement Disorders: Neuroanatomical and Cognitive Considerations

“…Sequences with greater planning requirements appear to be associated with greater activation only in left parietal and premotor (but not primary motor) areas when performance across both hands is pooled (Haaland, 2006; Haaland, Elsinger, Mayer, Durgerian, & Rao, 2004). Correlations between neural dynamics using electroencephalography (EEG) and sequencing behavior corroborate this view (Serrien & Sovijarvi-Spape, 2016).…”

Brain Connectivity Changes During Bimanual and Rotated Motor Imagery

“…Based on our experimental results, this study supports the following conclusions: mutual communication occurs between the prefrontal area (F3 and F4), which indicates that the nonimagined hand (ipsilateral site) and imagined hand (contralateral site) interact with each other for motor preparation and bilateral arm coordination after receiving visual feedback; communication occurs from the parietal region to bilateral frontal area (Pz to F3 and F4), which indicates that rotation of the hand-bike kept providing the spatial location information of each hand for motor planning. Because the neural patterns are influenced by the function of handedness, less connectivity in right hand condition could be due to all participants are the same right-handed and can image more efficiently [67] . …”

“…communication occurs from the parietal region to bilateral frontal area (Pz to F3 and F4), which indicates that rotation of the hand-bike kept providing the spatial location information of each hand for motor planning. Because the neural patterns are influenced by the function of handedness, less connectivity in right hand condition could be due to all participants are the same right-handed and can image more efficiently [67] .…”