EEG spectral coherence inter- and intrahemispheric during catching object fall task.
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 submitted to a specific motor task of catching 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 interaction 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.
Portella
Cláudio Elidio
CE
Laboratório de Mapeamento Cerebral e Integração Sensório-motor, Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro, Rua Silva Teles 30A/208, 20541-110 Rio de Janeiro, RJ, Brazil. itoito@click21.com.br
Silva
Julio Guilherme
JG
Machado
Sergio
S
Velasques
Bruna
B
Bastos
Victor Hugo do Vale
VH
Ferreira-Vorkapic
Camila
C
Terra
Patrícia
P
Lopes
Vladimir
V
Cagy
Mauricio
M
Carvalho
Eduardo de
Ed
Orsini
Marco
M
Basile
Luis
L
Piedade
Roberto
R
Ribeiro
Pedro
P
D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D009434:Neural Pathways / Q000502:physiology; D009949:Orientation / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D013028:Space Perception / Q000502:physiology*