Near-infrared spectroscopy based neurofeedback training increases specific motor imagery related cortical activation compared to sham feedback.
Biol Psychol
; 95: 21-30, 2014 Jan.
Article
em En
| MEDLINE
| ID: mdl-23714227
ABSTRACT
In the present study we implemented a real-time feedback system based on multichannel near-infrared spectroscopy (NIRS). Prior studies indicated that NIRS-based neurofeedback can enhance motor imagery related cortical activation. To specify these prior results and to confirm the efficacy of NIRS-based neurofeedback, we examined changes in blood oxygenation level collected in eight training sessions. One group got real feedback about their own brain activity (N=9) and one group saw a playback of another person's feedback recording (N=8). All participants performed motor imagery of a right hand movement. Real neurofeedback induced specific and focused brain activation over left motor areas. This focal brain activation became even more specific over the eight training sessions. In contrast, sham feedback led to diffuse brain activation patterns over the whole cortex. These findings can be useful when training patients with focal brain lesions to increase activity of specific brain areas for rehabilitation purpose.
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MEDLINE
Assunto principal:
Espectroscopia de Luz Próxima ao Infravermelho
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Neurorretroalimentação
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Imaginação
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Córtex Motor
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Movimento
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article