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  • cognitive
  • Atrophy of hippocampus and alteration of resting eyes-closed electroencephalographic (EEG) rhythms represent important features of mild cognitive impairment (MCI) and Alzheimer's disease (AD). (uniba.it)
  • Adult
  • Objective: The study examined diurnal regulation of salivary alpha-amylase (sAA) in association with daily stressors, adult day services (ADS) use, and other caregiving characteristics. (salimetrics.com)
  • sensory
  • The evidence presented in this article corroborates findings from other modalities, indicating that alpha-like activity functionally has an universal inhibitory role across sensory modalities. (frontiersin.org)
  • In depression relapse, we predict ST-Mindfulness's somatic attention competes with internally focused rumination, as internally focused cognitive processes (including working memory) rely on alpha filtering of sensory input. (frontiersin.org)
  • These results support the growing consensus that cue-induced alpha modulation is a functionally relevant sensory gating mechanism deployed by attention. (pubmedcentralcanada.ca)
  • However, allocation of these rhythms following an attentional cue, in anticipation of tactile sensory processing, has not been investigated. (pubmedcentralcanada.ca)
  • The mu rhythm has been documented on subdural recording of both sensory and motor cortex and shows the same characteristics as that seen on surface EEG, including distribution, morphology, and reactivity. (medscape.com)
  • enhances
  • Our computational model predicts ST-Mindfulness enhances top-down modulation of alpha by facilitating precise alterations in timing and efficacy of SI thalamocortical inputs. (frontiersin.org)
  • Translating this theory into neurophysiology, we hypothesize that with its somatic focus, mindfulness' top-down alpha rhythm modulation in SI enhances gain control which, in turn, sensitizes practitioners to better detect and regulate when the mind wanders from its somatic focus. (frontiersin.org)
  • tactile
  • Analysis of a second data set showed that, on a trial-by-trial basis, tactile detection probabilities decreased linearly with pre-stimulus mu-alpha and mu-beta power. (pubmedcentralcanada.ca)
  • spatial
  • This spatial shift in alpha activity is called anteriorization. (jneurosci.org)
  • We investigated whether spatial attention directed to or away from the hand impacted allocation of mu-alpha and mu-beta, the predictive value of these rhythms for detection, and the impact of cued attention on evoked responses. (pubmedcentralcanada.ca)
  • athletes
  • Regarding the hypothesis of reduced activity in elite karate athletes, low- and high-frequency alpha ERD was less pronounced in dorsal and "mirror" pathways in the elite karate athletes than in the non-athletes. (biomedsearch.com)
  • In conclusion, athletes' judgment of observed sporting actions is related to less pronounced alpha ERD, as a possible index of "neural efficiency" in experts engaged in social cognition. (biomedsearch.com)
  • hemispheres
  • We used a data driven approach to determine inter-hemispheric channel pairs and frequencies with a task specific increase in phase locking.We found significant phase locking between hemispheres in alpha frequency (8-12 Hz) in all subjects concurrent with movement of either hand. (frontiersin.org)
  • selective
  • Could orienting attention to a selective point in time influence the alpha rhythms as a function of the SHORT vs. LONG foreperiod? (ox.ac.uk)
  • oscillatory
  • Like the visual and the sensorimotor systems, the auditory system exhibits pronounced alpha-like resting oscillatory activity. (frontiersin.org)
  • show
  • The contribution of this paper is to show why propofol and other anesthetics known to act through GABA promote alpha frontally but suppress it posteriorly. (jneurosci.org)