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Cognitive Neurodynamics
Erschienen in: Cognitive Neurodynamics 6/2012

01.12.2012 | Research Article

Investigation of changes in EEG complexity during memory retrieval: the effect of midazolam

verfasst von: Nasibeh Talebi, Ali M. Nasrabadi, Tim Curran

Erschienen in: Cognitive Neurodynamics | Ausgabe 6/2012

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Abstract

The aim of this study is applying nonlinear methods to assess changes in brain dynamics in a placebo-controlled study of midazolam-induced amnesia. Subjects injected with saline and midazolam during study, performed old/new recognition memory tests with EEG recording. Based on previous studies, as midazolam causes anterograde amnesia, we expected that midazolam would affect the EEG’s degree of complexity. Recurrence quantification analysis, and approximate entropy were used in this assessment. These methods compare with other nonlinear techniques such as computation of the correlation dimension, are suitable for non-stationary EEG signals. Our findings suggest that EEG’s complexity decreases during memory retrieval. Although this trend is observed in nonlinear curves related to the midazolam condition, the overall complexity were greater than in the saline condition. This result implies that impaired memory function caused by midazolam is associated with greater EEG’s complexity compared to normal memory retrieval in saline injection.
Vorheriger Artikel A new discriminant NMF algorithm and its application to the extraction of subtle emotional differences in speech
Nächster Artikel Predictive adjustment of the perceived direction of gaze during saccadic eye movements

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Fußnoten
1
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Metadaten
Titel
Investigation of changes in EEG complexity during memory retrieval: the effect of midazolam
verfasst von
Nasibeh Talebi
Ali M. Nasrabadi
Tim Curran
Publikationsdatum
01.12.2012
Verlag
Springer Netherlands
Erschienen in
Cognitive Neurodynamics / Ausgabe 6/2012
Print ISSN: 1871-4080
Elektronische ISSN: 1871-4099
DOI
https://doi.org/10.1007/s11571-012-9214-0

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