Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/115834
Author(s): Tiago-Costa, E
Quelhas-Costa, E
João Santos Baptista
Title: Changes in EEG amplitude (Alpha and Beta waves) with Thermal environment
Issue Date: 2016
Abstract: When executing a task, brain activity can be observed through electric waves recorded in different frequency bands. The main ones are the Alpha, Beta, Theta and Delta waves. According to some authors, Alpha and Beta waves are related with cognitive capacity and, their presence and evolution, with an individualâ alertness. In this study, the intention was to evaluate how brain activity is directly influenced by temperature and humidity while performing a task. Therefore, a set of laboratory tests were undertaken to simulate sedentary work in two different thermal environments: 18ºC - 40% (cold) and 35ºC - 80% RH (hot). In the hot thermal environment, oscillation on Alpha waves amplitude suggests an alternation between periods of tiredness with periods in which concentration increases. Regarding Beta waves in the cold thermal environment, most of the time Beta activity is typically higher than that verified in the hot thermal environment. © The author; licensee Universidad Nacional de Colombia.
Subject: Tecnologia da segurança, Engenharia médica
Safety technology, Medical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia médica
Engineering and technology::Medical engineering
URI: https://repositorio-aberto.up.pt/handle/10216/115834
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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