EEG spectral cohrence inter and intrahemispheric during catching object fall task

Arquivos de Neuro-Psiquiatria

Cláudio Elidio Portella²  Julio Guilherme Silva²  Sergio Machado²  Bruna Velasques²  Victor Hugo Do Vale Bastos²  Camila Ferreira-vorkapic²  Patrícia Terra¹  Vladimir Lopes¹  Mauricio Cagy²  Eduardo De Carvalho¹  Marco Orsini¹  Luis Basile¹  Roberto Piedade²  Pedro Ribeiro² 

[1] ,Universidade Federal do Rio de Janeiro Instituto de Psiquiatria Laboratório de Mapeamento Cerebral e Integração Sensório-motor

关键词: coherence;    neural specialization;    qEEG;    motor activity;    coerência;    especialização neural;    EEGq;    atividade motora;   

DOI  :  10.1590/S0004-282X2007000100014

来源: SciELO

【 摘 要 】

The aim of the present study was to evaluate coherence measures at Theta through qEEG during the accomplishment of a specific motor task. The sample consisted of 23 healthy individuals, both sexes, with ages varying between 25 and 40 years old. All subjects were submmitted to a specific motor task of cacthing sequences of falling balls. A three-way ANOVA was employed for the statistical analysis, which demonstrated main effects for the following factors: time, block and position. However, there was no interection between the factors. A significant and generalized coherence reduction was observed during the task execution time. Coherence was also diminished at the left frontal cortex and contralateral hemisphere of the utilizing limb (comparing to the right frontal cortex). In conclusion, these findings suggest a certain specialization of the neural circuit, also according to previous investigations. The inter-coherence reduction suggests a spatial inter-electrode dependence during the task, rather than a neuronal specialization.

【 授权许可】

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