Abstract
The current study examined electrophysiological entropy in younger adults, older adults, and older cognitively declined adults across four experimental conditions - eyes closed, eyes open, and during both encoding and recognition of words in a memory task. We hypothesised reduced entropy in older declined adults relative to both older controls and younger adults, with the largest group differences in entropy expected during the encoding and recognition phases of the experiment. We also hypothesised greater hemispheric asymmetry in younger adults compared with older controls and older declined adults. Results revealed significant increases in entropy from eyes closed to eyes open to task. Young adults showed higher entropy in the right relative to the left hemisphere in the temporal lobe and higher entropy in the left relative to the right hemisphere in the parietal lobe. Old cognitively declined adults showed no significant differences between right and left hemisphere entropy. There was a trend whereby older declined adults showed lower entropy than older controls in the frontal lobe, this difference being largest in the left hemisphere during the encoding phase of the experiment. Results indicate that measures of entropy are ...Continue Reading
References
Dec 1, 1992·Journal of Clinical Epidemiology·K Ritchie, J Touchon
Apr 1, 1991·Biophysical Journal·D T KaplanA L Goldberger
Sep 1, 1996·Psychological Bulletin·R L West
Sep 15, 1998·IEEE Transactions on Bio-medical Engineering·I A Rezek, S J Roberts
Feb 7, 2001·Current Opinion in Neurobiology·C L Grady, F I Craik
Jan 5, 2002·Neurobiology of Aging·Ary L GoldbergerLewis A Lipsitz
Feb 28, 2002·The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences·Lewis A Lipsitz
Aug 23, 2002·Physical Review Letters·Madalena CostaC-K Peng
Dec 14, 2002·Lancet·Karen Ritchie, Simon Lovestone
May 20, 2003·Psychophysiology·T A A WatanabeP E Rapp
Mar 1, 1995·Chaos·Steve Pincus
Jul 24, 2003·Brain : a Journal of Neurology·Donald T StussMichael P Alexander
Mar 24, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Madalena CostaC-K Peng
Aug 19, 2006·IEEE Transactions on Bio-medical Engineering·Geoffrey HendersonFabrizio Vecchio
Jun 23, 2007·Journal of Cognitive Neuroscience·Angela H GutchessKara D Federmeier
Feb 14, 2009·Journal of Neural Engineering·David AkkurtMetin Akay
Citations
Mar 19, 2013·Brain Topography·Denis O'HoraNeil Upton
Jan 10, 2014·PloS One·Josef ZihlMarkus Bühner
Dec 3, 2014·Brain and Cognition·Chun-Hao WangWei-Kuang Liang
Jul 15, 2015·Experimental Brain Research·Miodrag StokićMilena Čukić
Jun 25, 2014·Frontiers in Human Neuroscience·Ian M McDonough, Kaoru Nashiro
Jul 26, 2019·The European Journal of Neuroscience·Joanne P M KenneyMichael J Hogan
Nov 6, 2015·Frontiers in Human Neuroscience·Michael J HoganJulia Dimitrova
Dec 9, 2020·Entropy·Jie SunJie Xiang
Dec 9, 2020·Entropy·Francesca AlùFabrizio Vecchio
Mar 27, 2021·Mechanisms of Ageing and Development·Francesca AlùFabrizio Vecchio