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題名 The influence of attention levels on psychophysiological responses
作者 黃淑麗
Chang, Yu-Chieh ; Huang, Shwu-Lih
貢獻者 心理系
關鍵詞 Attention levels; Alpha2 desynchronization; Theta synchronization; Heart rate variability
日期 2012.09
上傳時間 30-六月-2014 17:55:55 (UTC+8)
摘要 This study aimed to examine which brain oscillatory activities and peripheral physiological measures were influenced by attention levels. A new experimental procedure was designed. Participants were asked to count the number of target events while viewing eight moving white circles. An event occurred when two of the circles changed from white to red or blue. In the low-attention task, similar to a feature search, the target events were defined by color only. In the high-attention task, similar to a conjunction search, the target events were defined by both color and size. In the control task, participants were asked to passively watch the series of events while remembering a number. Based on Feature Integration Theory, our high-attention task would demand more attentional investment than the low-attention task. Given the identical visual stimuli and requirement of keeping a number in working memory for all three tasks, the changes in brain oscillatory activities can be attributed to attention level rather than to perceptual content or memory processes. Peripheral measures such as heart rate, heart rate variability (HRV), respiration rate, eye blinks, and skin conductance level were also evaluated. In comparing the high-attention task with the low-attention task, theta synchronization at the Fz, Cz, and Pz electrodes as a group, alpha2 desynchronization at the Fz, Cz, Pz, and Oz electrodes as a group, and a decrease in the low-frequency component and ratio measure of HRV were evident. These measures are considered to be promising indices for discriminating between attention levels.
關聯 International Journal of psychophysiology, 86(1), 39-47
資料類型 article
DOI http://dx.doi.org/10.1016/j.ijpsycho.2012.09.001
dc.contributor 心理系en_US
dc.creator (作者) 黃淑麗zh_TW
dc.creator (作者) Chang, Yu-Chieh ; Huang, Shwu-Lihen_US
dc.date (日期) 2012.09en_US
dc.date.accessioned 30-六月-2014 17:55:55 (UTC+8)-
dc.date.available 30-六月-2014 17:55:55 (UTC+8)-
dc.date.issued (上傳時間) 30-六月-2014 17:55:55 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/67023-
dc.description.abstract (摘要) This study aimed to examine which brain oscillatory activities and peripheral physiological measures were influenced by attention levels. A new experimental procedure was designed. Participants were asked to count the number of target events while viewing eight moving white circles. An event occurred when two of the circles changed from white to red or blue. In the low-attention task, similar to a feature search, the target events were defined by color only. In the high-attention task, similar to a conjunction search, the target events were defined by both color and size. In the control task, participants were asked to passively watch the series of events while remembering a number. Based on Feature Integration Theory, our high-attention task would demand more attentional investment than the low-attention task. Given the identical visual stimuli and requirement of keeping a number in working memory for all three tasks, the changes in brain oscillatory activities can be attributed to attention level rather than to perceptual content or memory processes. Peripheral measures such as heart rate, heart rate variability (HRV), respiration rate, eye blinks, and skin conductance level were also evaluated. In comparing the high-attention task with the low-attention task, theta synchronization at the Fz, Cz, and Pz electrodes as a group, alpha2 desynchronization at the Fz, Cz, Pz, and Oz electrodes as a group, and a decrease in the low-frequency component and ratio measure of HRV were evident. These measures are considered to be promising indices for discriminating between attention levels.en_US
dc.format.extent 589993 bytes-
dc.format.mimetype application/pdf-
dc.language.iso en_US-
dc.relation (關聯) International Journal of psychophysiology, 86(1), 39-47en_US
dc.subject (關鍵詞) Attention levels; Alpha2 desynchronization; Theta synchronization; Heart rate variabilityen_US
dc.title (題名) The influence of attention levels on psychophysiological responsesen_US
dc.type (資料類型) articleen
dc.identifier.doi (DOI) 10.1016/j.ijpsycho.2012.09.001en_US
dc.doi.uri (DOI) http://dx.doi.org/10.1016/j.ijpsycho.2012.09.001 en_US