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18 de jun. de 2024 · Alpha oscillations are electrophysiological features of the human brain linked to fundamental processes including memory and perception. This study introduces a closed-loop auditory stimulation approach to selectively modulate alpha oscillations in the human brain in a phase-dependent and spatially-specific manner.
Hace 4 días · In Fig. 3 a, we demonstrate alpha (8-12 Hz) power increase toward memory duration. In further analysis, considering the critical role of the alpha frequency band in working memory [7, 8], we averaged the normalized power at 8-12 Hz and at 300 ms intervals following the stimulus onset (Fig. 3 b).
14 de jun. de 2024 · Many sources traditionally define the alpha rhythm within the 8-12 Hz range. This is common in older literature and is used in some clinical contexts to describe the typical frequency band associated with a relaxed, awake state. For example, Jadeja (2021) describes clinically relevant EEG frequency bands, including the alpha rhythm ...
21 de jun. de 2024 · Altered EEG Theta and Alpha Band Functional Connectivity in Mild Cognitive Impairment During Working Memory coding Abstract: Individuals with mild cognitive impairment (MCI), the preclinical stage of Alzheimer disease (AD), suffer decline in their visual working memory (WM) functions.
13 de jun. de 2024 · Alpha waves, one of the major components of resting and awake cortical activity in human electroencephalography (EEG), are known to show waxing and waning, but this phenomenon has rarely been analyzed. In the present study, we analyzed this phenomenon from the viewpoint of excitation and inhibition.
Hace 5 días · This suggests that, in both the theta and alpha bands, the frontal, temporal, and parietal regions are implicated in abnormal network connectivity for both AD and FTD patients. However, in the central region, patients with AD and FTD only exhibited abnormal network connectivity in the theta band, with no significant changes found in the alpha band.
2 de jul. de 2024 · According to our results, CK1 failed to extract alpha oscillations in task 1 and theta oscillations in task 2, indicating that it may not interpret the CNN itself. In contrast to CK1, the spectrum of CK2 converged in the alpha and the beta bands in task 1 (Fig. 4A, B), providing a mediocre interpretability.
