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http://dx.doi.org/10.14695/KJSOS.2022.25.2.79

Comparing Physiological Changes in Breathing Conditions during Cognitive Tasks  

Jung, Ju-Yeon (가천대학교 일반대학원 보건과학과)
Lee, Yeong-Bae (가천대학교 의과대학 신경과, 가천대학길의료센터 신경과)
Park, Hyeon-Mi (가천대학교 의과대학 신경과, 가천대학길의료센터 신경과)
Kang, Chang-Ki (가천대학교 보건과학대학 방사선학과)
Publication Information
Science of Emotion and Sensibility / v.25, no.2, 2022 , pp. 79-86 More about this Journal
Abstract
With external air pollution forcing many people indoors, new methods of facilitating healthier indoor life are necessary. This study, therefore, investigates the effects of indoor oxygen concentration and respiration methods on biosignals and cognitive ability. The study included twenty healthy subjects who inhaled air through a mask from a gas delivery system. All subjects were asked to perform three types of breathing (nasal, oral, and oral breathing with high oxygenation) and respond to cognitive stimuli (rest close eye, rest open eye, 1-back and 2-back working memory tasks). The changes in cognitive load according to respiration were analyzed by measuring response time, accuracy, and biosignals to stimuli. The result showed that, in all three respirations, heart rate significantly increased with the increase in cognitive load. Also, in oral respiration, the airway respiration rate significantly increased according to the increase in cognitive load. The change appeared to compensate for insufficient oxygen supply in oral respiration during cognitive activity. Conversely, there was no significant change in airway respiration rate during oral respiration with a high concentration oxygen supply as in nasal respiration. This result suggests that a high concentration oxygen supply might play a role in compensating for insufficient oxygen concentration or inefficient oxygen inhalation, such as oral respiration. Based on the results of this study, a follow-up study is necessary to determine the impact of changes in the autonomic nervous system, such as stress and emotions, to find out more precise and comprehensive effects of oxygen concentration and breathing type.
Keywords
High Oxygen Concentration; Oral Respiration; Working Memory; Vital Signs;
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