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Event-related EEG time-frequency PCA and the orienting reflex to auditory stimuli.

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Title: Event-related EEG time-frequency PCA and the orienting reflex to auditory stimuli.
Authors: Barry, Robert J., De Blasio, Frances M., Bernat, Edward M., Steiner, Genevieve Z.
Source: Psychophysiology. Apr2015, Vol. 52 Issue 4, p555-561. 7p.
Subjects: Auditory perception, Electroencephalography, Principal components analysis, Orienting reflex, Time-frequency analysis, Delta rhythm
Abstract: We recently reported an auditory habituation series with counterbalanced indifferent and significant (counting) instructions. Time-frequency (t-f) analysis of electrooculogram-corrected EEG was used to explore event-related synchronization ( ERS)/desynchronization ( ERD) in four EEG bands using arbitrarily selected time epochs and traditional frequency ranges. ERS in delta, theta, and alpha, and subsequent ERD in theta, alpha, and beta, showed substantial decrement over trials, yet effects of stimulus significance (count vs. no-task) were minimal. Here, we used principal components analysis ( PCA) of the t-f data to investigate the natural frequency and time combinations involved in such stimulus processing. We identified four ERS and four ERD t-f components: six showed decrement over trials, four showed count > no-task effects, and six showed Significance × Trial interactions. This increased sensitivity argues for the wider use of our data-driven t-f PCA approach. [ABSTRACT FROM AUTHOR]
Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Event-related EEG time-frequency PCA and the orienting reflex to auditory stimuli.
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  Data: <searchLink fieldCode="AR" term="%22Barry%2C+Robert+J%2E%22">Barry, Robert J.</searchLink><br /><searchLink fieldCode="AR" term="%22De+Blasio%2C+Frances+M%2E%22">De Blasio, Frances M.</searchLink><br /><searchLink fieldCode="AR" term="%22Bernat%2C+Edward+M%2E%22">Bernat, Edward M.</searchLink><br /><searchLink fieldCode="AR" term="%22Steiner%2C+Genevieve+Z%2E%22">Steiner, Genevieve Z.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Psychophysiology%22">Psychophysiology</searchLink>. Apr2015, Vol. 52 Issue 4, p555-561. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Auditory+perception%22">Auditory perception</searchLink><br /><searchLink fieldCode="DE" term="%22Electroencephalography%22">Electroencephalography</searchLink><br /><searchLink fieldCode="DE" term="%22Principal+components+analysis%22">Principal components analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Orienting+reflex%22">Orienting reflex</searchLink><br /><searchLink fieldCode="DE" term="%22Time-frequency+analysis%22">Time-frequency analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Delta+rhythm%22">Delta rhythm</searchLink>
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  Data: We recently reported an auditory habituation series with counterbalanced indifferent and significant (counting) instructions. Time-frequency (t-f) analysis of electrooculogram-corrected EEG was used to explore event-related synchronization ( ERS)/desynchronization ( ERD) in four EEG bands using arbitrarily selected time epochs and traditional frequency ranges. ERS in delta, theta, and alpha, and subsequent ERD in theta, alpha, and beta, showed substantial decrement over trials, yet effects of stimulus significance (count vs. no-task) were minimal. Here, we used principal components analysis ( PCA) of the t-f data to investigate the natural frequency and time combinations involved in such stimulus processing. We identified four ERS and four ERD t-f components: six showed decrement over trials, four showed count > no-task effects, and six showed Significance × Trial interactions. This increased sensitivity argues for the wider use of our data-driven t-f PCA approach. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1111/psyp.12376
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        Text: English
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        Type: general
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      – SubjectFull: Principal components analysis
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              Text: Apr2015
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