Theta-gamma coupling during episodic retrieval in the human EEG
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Theta-gamma coupling during episodic retrieval in the human EEG. / Köster, Moritz; Friese, Uwe; Schöne, Benjamin; Trujillo-Barreto, Nelson; Gruber, Thomas.
In: BRAIN RES, Vol. 1577, 2014, p. 57-68.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Theta-gamma coupling during episodic retrieval in the human EEG
AU - Köster, Moritz
AU - Friese, Uwe
AU - Schöne, Benjamin
AU - Trujillo-Barreto, Nelson
AU - Gruber, Thomas
N1 - Copyright © 2014 Elsevier B.V. All rights reserved.
PY - 2014
Y1 - 2014
N2 - Recent findings indicate that phase-amplitude coupling between neuronal oscillations in the theta- (3-6 Hz) and the gamma-band (30-100 Hz) plays a functional role in memory processes. Here, using electroencephalography, we provide further evidence for coupling between prefrontal theta and parietal gamma during successful memory retrieval in the human brain. In a pictorial recognition task, the coupling between prefrontal theta phase and parietal gamma amplitude was quantified using the modulation index, 100-1500 ms after stimulus onset. Results show an increased coupling for remembered, as opposed to forgotten and new stimuli (i.e. a "recognition effect" and an "old/new effect"). Phase-amplitude coupling between the prefrontal theta phase and posterior gamma amplitudes is hypothesized to reflect long range communication between prefrontal control processes and the activation of posterior object representations accompanying mnemonic processing.
AB - Recent findings indicate that phase-amplitude coupling between neuronal oscillations in the theta- (3-6 Hz) and the gamma-band (30-100 Hz) plays a functional role in memory processes. Here, using electroencephalography, we provide further evidence for coupling between prefrontal theta and parietal gamma during successful memory retrieval in the human brain. In a pictorial recognition task, the coupling between prefrontal theta phase and parietal gamma amplitude was quantified using the modulation index, 100-1500 ms after stimulus onset. Results show an increased coupling for remembered, as opposed to forgotten and new stimuli (i.e. a "recognition effect" and an "old/new effect"). Phase-amplitude coupling between the prefrontal theta phase and posterior gamma amplitudes is hypothesized to reflect long range communication between prefrontal control processes and the activation of posterior object representations accompanying mnemonic processing.
KW - Brain
KW - Electroencephalography
KW - Female
KW - Gamma Rhythm
KW - Humans
KW - Male
KW - Mental Recall
KW - Neuropsychological Tests
KW - Pattern Recognition, Visual
KW - Photic Stimulation
KW - Theta Rhythm
KW - Young Adult
U2 - 10.1016/j.brainres.2014.06.028
DO - 10.1016/j.brainres.2014.06.028
M3 - SCORING: Journal article
C2 - 24978601
VL - 1577
SP - 57
EP - 68
JO - BRAIN RES
JF - BRAIN RES
SN - 0006-8993
ER -