Age-Related Task Sensitivity of Frontal EEG Entropy During Encoding Predicts Retrieval
Open Access
- 17 March 2013
- journal article
- Published by Springer Science and Business Media LLC in Brain Topography
- Vol. 26 (4), 547-557
- https://doi.org/10.1007/s10548-013-0278-x
Abstract
Age-related declines in memory may be due in part to changes in the complexity of neural activity in the aging brain. Electrophysiological entropy provides an accessible measure of the complexity of ongoing neural activity. In the current study, we calculated the permutation entropy of the electroencephalogram (EEG) during encoding of relevant (to be learned) and irrelevant (to be ignored) stimuli by younger adults, older adults, and older cognitively declined adults. EEG entropy was differentially sensitive to task requirements across groups, with younger and older controls exhibiting greater control of encoding-related activity than older declined participants. Task sensitivity of frontal EEG during encoding predicted later retrieval, in line with previous evidence that cognitive decline is associated with reduced ability to self-initiate encoding-related processes.Keywords
This publication has 68 references indexed in Scilit:
- Entropy analysis of the EEG background activity in Alzheimer's disease patientsPhysiological Measurement, 2006
- Analysis of regularity in the EEG background activity of Alzheimer's disease patients with Approximate EntropyClinical Neurophysiology, 2005
- Memory and Executive Function in Aging and ADNeuron, 2004
- Permutation Entropy: A Natural Complexity Measure for Time SeriesPhysical Review Letters, 2002
- Cortical coordination dynamics and cognitionTrends in Cognitive Sciences, 2001
- Approximate Entropy as an Electroencephalographic Measure of Anesthetic Drug Effect during Desflurane AnesthesiaAnesthesiology, 2000
- Frontal cortex contributes to human memory formationNature Neuroscience, 1999
- Making Memories: Brain Activity that Predicts How Well Visual Experience Will Be RememberedScience, 1998
- Parameters of EEG dimensional complexity in Alzheimer's diseaseElectroencephalography and Clinical Neurophysiology, 1995
- Diagnostic efficacy of computerized spectral versus visual EEG analysis in elderly normal, demented and depressed subjectsElectroencephalography and Clinical Neurophysiology, 1988