Medidas eletrencefalográficas durante a aprendizagem de tarefa motora sob efeito do bromazepam

Abstract

Durante a vida nos deparamos com diversos fatores tais como agitação, pressão e stress. O somatório destes fatores pode levar ao sentimento de sofrimento que re p resenta a tentativa humana de viver num ambiente que lhe parece adverso. A ansiedade é uma das manifestações mais fre q ü e n t e s do sofrimento e pode ser descrita como um estado p a rticular de esperar ou pre p a r a r-se para o perigo, ainda que desconhecido. Atualmente a ansiedade vem se configurando como problema de saúde pública, visto os prejuízos causados por esta na qualidade de vida do indivíduo 1,2 . Inúmeras terapias vêm sendo empregadas no sentido de pro p o rc i o n a r melhor qualidade de vida aos port a d o res desta doença. Benzodiazepínicos têm sido amplamente utilizados nas últimas quatro décadas para o tratamento dos transtornos de ansiedade. Tal uso justifica-se por suas propriedades ansiolítica, anticonvulsiva, miorelaxante e hipnótica em caso de dose elevada 3 -7 Electroencephalography measures in motor skill learning and effects of bromazepamABSTRACT -Neuromodulators change brain's neural circ u i t ry. Bromazepam is often been used in the p h a rmacological treatment of anxiety disorders. Few papers links this anxiolytic to motor tasks. The purpose of this study was to examine motor and electrophysiological changes produced by administration of bromazepam in differents doses (3 and 6 mg). The sample consisted of 39 healthy individuals, of both sexes, between 20 and 30 years of age. The control (placebo) and experimental (bromazepam 3mg and bromazepam 6 mg) groups were submitted to a typewriting task, in a randomized, double-blind design. The results did not reveal diff e rences on score and time of the attention test. In the comportamental analysis was noticed blocks as main effect to behavioral variables (time and mistakes in the task).

EEG spectral cohrence inter and intrahemispheric during catching object fall task

“…This is well observed in models involving sequential motor tasks, in which coherence measures among cortical areas are high at the beggining of the task, and reducted as the movement is frequently repeated. Probably, the pre-established areas regarding motor functions are activated 25 . These experiments contribute to the comprehension of differences between times 1 and 3.…”

Motor ability and attention span among individuals dependent on illicit psychotropic drugs

“…First there is the absence of analysis of the medication variable. Despite a study 25 that evaluated the motor task (typing) and attention under the effect of a psychopharmaceutical drug, in that case it was Bromazepan in control and test groups, having reported no differences in the gross score and in the performance time, mistakes were made during the motor training in the trial group.…”

Changes in cortical relative power in patients submitted to a tendon transfer: a pre and post surgery study

“…the alpha power increase in F7 electrode might represent a neuronal specialization that occurred after the tendon transfer procedure; suggesting a greater mental effort and attention in an attempt to perform the new movement 20 . In addition, it might be considered a pre learning stage 21 . our outcomes are in agreement with neuroplasticity theories, regarding the motor restoration mechanisms of foot movement after the surgery.…”