7 documents found, page 1 of 1
Cortical asymmetry: catching an object in free fall
Velasques,Bruna; Machado,Sergio; Portella,Cláudio Elidio; Silva,Julio Guilherme; Terra,Patrícia; Ferreira,Camila; Basile,Luis; Cagy,MauricioThe main goal of the present study was to analyze theta asymmetry through quantitative electroencephalography (qEEG) when individuals were exposed to a sequential motor task, i.e. catching a ball. The sample was composed of 23 healthy subjects, male and female, between 25 and 40 years of age. A two-way factor Anova was applied to compare pre and post moments related to the balls' drop and scalp regions (i.e., f...
Beta and alpha electroencephalographic activity changes after acute exercise
Moraes,Helena; Ferreira,Camila; Deslandes,Andréa; Cagy,Mauricio; Pompeu,Fernando; Ribeiro,Pedro; Piedade,RobertoExercise has been widely related to changes in cortical activation and enhanced brain functioning. Quantitative electroencephalography (qEEG) is frequently used to investigate normal and pathological conditions in the brain cortex. Therefore, the aim of the present study was to observe absolute power alterations in beta and alpha frequency bands after a maximal effort exercise. Ten healthy young volunteers were...
Motor learning processes: an electrophysiologic perspective
Velasques,Bruna; Ferreira,Camila; Teixeira,Silmar Silva; Furtado,Vernon; Mendes,Elizabeth; Basile,Luis; Cagy,Mauricio; Piedade,Roberto; Ribeiro,PedroThe goal of the present study was to investigate electrophysiologic, qEEG, changes when individuals were exposed to a motor task. Subjects brain electrical activity was analyzed before and after the typewriting training task. For the neurophysiological variable asymmetry, a paired t-test was performed to compare each moment, pre and post-task, in the beta bands. The findings showed a change for the qEEG variab...
The effects of bromazepam on the early stage of visual information processing (...
Puga,Fernanda; Sampaio,Isabel; Veiga,Heloisa; Ferreira,Camila; Cagy,Maurício; Piedade,Roberto; Ribeiro,PedroThe early stages of visual information processing, involving the detection and perception of simple visual stimuli, have been demonstrated to be sensitive to psychotropic agents. The present study investigated the effects of an acute dose of bromazepam (3 mg), compared with placebo, on the P100 component of the visual evoked potential and reaction time. The sample, consisting of 14 healthy subjects (6 male and ...
O exercício físico no tratamento da depressão em idosos: revisão sistemática
Moraes,Helena; Deslandes,Andréa; Ferreira,Camila; Pompeu,Fernando A. M. S.; Ribeiro,Pedro; Laks,JersonOBJETIVOS: Revisar a literatura quanto (I) ao possível efeito protetor do exercício físico sobre a incidência de depressão e (II) à eficácia do exercício físico como intervenção no tratamento da depressão. MÉTODO: Revisão sistemática de artigos em inglês e português nas bases ISI, PubMed, SciELO e LILACS de janeiro de 1993 a maio de 2006, utilizando conjuntamente os termos "depressão", "idosos" e "exercício". A...
The relation between EEG prefrontal asymmetry and subjective feelings of mood f...
Ferreira,Camila; Deslandes,Andréa; Moraes,Helena; Cagy,Maurício; Basile,Luiz Fernando; Piedade,Roberto; Ribeiro,PedroSeveral studies have investigated the relationship between asymmetrical EEG activity over the frontal cortex and mood. This study aimed at investigating the association between state fluctuations in frontal alpha EEG asymmetry and state changes followed by 24 h of sleep deprivation (SD). Our results show that sleep deprivation caused a significant alteration in the asymmetry values. Activation shifted from the ...
Electroencephalographic changes after one nigth of sleep deprivation
Ferreira,Camila; Deslandes,Andréa; Moraes,Helena; Cagy,Maurício; Pompeu,Fernando; Basile,Luis Fernando; Piedade,Roberto; Ribeiro,PedroTotal or partial sleep deprivation (SD) causes degrading effects on different cognitive and psychomotor functions that might be related to electrophysiological changes frequently observed. In the present study, we investigated the effects of one night of sleep deprivation on waking EEG. Experimental protocol consisted of recording electroencephalographic data from eleven healthy young subjects before (baseline)...