Magnetoencephalogram recording from secondary motor areas during imagined movements

Arquivos de Neuro-Psiquiatria

Carlos Amo¹  José R. Criado¹  Shirley M. Otis¹ 

[1] ,Scripps Clinic Brain Research and Treatment Center Division of NeurologyLa Jolla CA ,USA

关键词: secondary motor cortex;    somatosensory areas;    motor primary areas;    magnetoencephalography (MEG);    motor imagined movements;    áreas motoras secundárias;    áreas somato-sensoriais;    áreas motoras;    magnetencefalografia (MEG);    simulação interna do movimento;   

DOI  :  10.1590/S0004-282X2006000300008

来源: SciELO

【 摘 要 】

This study determined whether the activity of the secondary motor cortex (M2) could be recorded during imagined movements (IM) of the right and left hand using magnetoencephalography (MEG). Results during IM were compared with a somatosensory trial during a passive tactile stimulation in one subject. During the somatosensory trial, dipoles were detected in somatosensory (SS) and motor primary (M1) areas, scoring 94.4-98.4% for SS, 1.6-5.6% for M1 and 0% for M2. During the IM trial, dipoles were detected in SS, M1 and M2 areas, scoring 61.1-68.8% for SS, 2.6-9.3% for M1 and 28.6-29.6% for M2. These data support the hypothesis that M2 areas are activated during imagined hand movements. This study aims for the development of a diagnosis test for patients with motor deficits by evaluating the whole somatomotor network with specific interest in M2 areas.

【 授权许可】

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