Relevance of EEG alpha and theta oscillations during task switching

P Sauseng; W Klimesch; R Freunberger; T Pecherstorfer; S Hanslmayr; M Doppelmayr

doi:10.1007/s00221-005-0211-y

Relevance of EEG alpha and theta oscillations during task switching

P Sauseng, W Klimesch, R Freunberger, T Pecherstorfer, S Hanslmayr, M Doppelmayr

Psychology

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

In a task switching design, we investigated the question whether long-range theta coupling primarily reflects top-down control processes. Switch and stay trials did not differ with respect to memory load or global working memory (WM) demands. The results revealed significantly stronger theta coupling (in a range of 4-7 Hz) between prefrontal and posterior regions during switch as compared to stay trials. Power differences, reflecting more local effects, were largest in the upper alpha band (10-13 Hz) and over posterior brain areas, possibly reflecting long-term memory activation. The conclusion of the present study is that long-range coherent oscillatory activity in the theta band reflects top-down activation rather than global WM functions.

Original language	English
Pages (from-to)	295-301
Number of pages	7
Journal	Experimental Brain Research
Volume	170
Issue number	3
DOIs	https://doi.org/10.1007/s00221-005-0211-y
Publication status	Published - Apr 2006

Keywords

Adult
Alpha Rhythm
Analysis of Variance
Brain
Brain Mapping
Female
Humans
Male
Memory, Short-Term
Photic Stimulation
Predictive Value of Tests
Theta Rhythm
Time Factors

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10.1007/s00221-005-0211-y

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abstract = "In a task switching design, we investigated the question whether long-range theta coupling primarily reflects top-down control processes. Switch and stay trials did not differ with respect to memory load or global working memory (WM) demands. The results revealed significantly stronger theta coupling (in a range of 4-7 Hz) between prefrontal and posterior regions during switch as compared to stay trials. Power differences, reflecting more local effects, were largest in the upper alpha band (10-13 Hz) and over posterior brain areas, possibly reflecting long-term memory activation. The conclusion of the present study is that long-range coherent oscillatory activity in the theta band reflects top-down activation rather than global WM functions.",

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T1 - Relevance of EEG alpha and theta oscillations during task switching

AU - Sauseng, P

AU - Klimesch, W

AU - Freunberger, R

AU - Pecherstorfer, T

AU - Hanslmayr, S

AU - Doppelmayr, M

PY - 2006/4

Y1 - 2006/4

N2 - In a task switching design, we investigated the question whether long-range theta coupling primarily reflects top-down control processes. Switch and stay trials did not differ with respect to memory load or global working memory (WM) demands. The results revealed significantly stronger theta coupling (in a range of 4-7 Hz) between prefrontal and posterior regions during switch as compared to stay trials. Power differences, reflecting more local effects, were largest in the upper alpha band (10-13 Hz) and over posterior brain areas, possibly reflecting long-term memory activation. The conclusion of the present study is that long-range coherent oscillatory activity in the theta band reflects top-down activation rather than global WM functions.

AB - In a task switching design, we investigated the question whether long-range theta coupling primarily reflects top-down control processes. Switch and stay trials did not differ with respect to memory load or global working memory (WM) demands. The results revealed significantly stronger theta coupling (in a range of 4-7 Hz) between prefrontal and posterior regions during switch as compared to stay trials. Power differences, reflecting more local effects, were largest in the upper alpha band (10-13 Hz) and over posterior brain areas, possibly reflecting long-term memory activation. The conclusion of the present study is that long-range coherent oscillatory activity in the theta band reflects top-down activation rather than global WM functions.

KW - Adult

KW - Alpha Rhythm

KW - Analysis of Variance

KW - Brain

KW - Brain Mapping

KW - Female

KW - Humans

KW - Male

KW - Memory, Short-Term

KW - Photic Stimulation

KW - Predictive Value of Tests

KW - Theta Rhythm

KW - Time Factors

U2 - 10.1007/s00221-005-0211-y

DO - 10.1007/s00221-005-0211-y

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SN - 0014-4819

VL - 170

SP - 295

EP - 301

JO - Experimental Brain Research

JF - Experimental Brain Research

IS - 3

ER -

Relevance of EEG alpha and theta oscillations during task switching

Abstract

Keywords

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