Hemispheric asymmetry in hand preference of right-handers for passive vibrotactile perception: an fNIRS study.
Sci Rep
; 10(1): 13423, 2020 08 07.
Article
em En
| MEDLINE
| ID: mdl-32770115
ABSTRACT
Hemispheric asymmetry in hand preference for passive cutaneous perception compared to active haptic perception is not well known. A functional near-infrared spectroscopy was used to evaluate the laterality of cortical facilitation when 31 normal right-handed participants were involved in 205 Hz passive vibrotactile cutaneous stimuli on their index fingers of preferred and less-preferred hand. Passive cutaneous perception resulted that preferred (right) hand stimulation was strongly leftward lateralized, whereas less-preferred (left) hand stimulation was less lateralized. This confirms that other manual haptic exploration studies described a higher hemispheric asymmetry in right-handers. Stronger cortical facilitation was found in the right primary somatosensory cortex (S1) and right somatosensory association area (SA) during left-hand stimulation but not right-hand stimulation. This finding suggests that the asymmetric activation in the S1 and SA for less-preferred (left) hand stimulation might contribute to considerably reinforce sensorimotor network just with passive vibrotactile cutaneous stimulation.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Percepção
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Estimulação Física
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Fenômenos Fisiológicos da Pele
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Córtex Somatossensorial
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Vibração
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Percepção do Tato
Limite:
Female
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Humans
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Male
Idioma:
En
Revista:
Sci Rep
Ano de publicação:
2020
Tipo de documento:
Article