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Gamma entrainment frequency affects mood, memory and cognition: an exploratory pilot study.

Ryan L S Sharpe¹, Mufti Mahmud^2,3, M Shamim Kaiser⁴

¹Department of Computer Science, Nottingham Trent University, Nottingham, NG11 8NS, UK.

Brain Informatics

|November 23, 2020

Summary

This pilot study suggests Gamma 40 Hz brainwave entrainment may improve mood, memory, and cognition. Participants showed enhanced cognitive and memory scores after binaural beat stimulation.

Keywords:

40 Hz Cognition improvements Gamma frequency Memory improvements Mood improvements

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Area of Science:

Neuroscience
Cognitive Science

Background:

Brainwave entrainment is a non-invasive technique.
Gamma frequency (40 Hz) is associated with cognitive functions.

Purpose of the Study:

To investigate the effects of Gamma 40 Hz binaural beat stimulation on mood, memory, and cognition.
To explore potential correlations between entrainment frequency, session number, and mood scores.

Main Methods:

An exploratory pilot study with 9 participants divided into three groups (40 Hz, 25 Hz, 100 Hz).
Participants underwent eight 4-week sessions of binaural beat stimulation.
Cognitive and memory assessments were conducted pre- and post-stimulation; mood was assessed across sessions.

Main Results:

Gamma 40 Hz group showed a mean cognitive score improvement from 75% to 85% (p=0.076).
Significant memory score improvement was observed in the 40 Hz group, from 87% to 95% (p=0.0027).
A negative correlation in mood scores across all groups indicated improved mood; the 40 Hz group showed a strong correlation (R²=0.9838) between sessions and mood.

Conclusions:

Gamma 40 Hz binaural entrainment shows promise for enhancing cognitive function and memory.
The findings suggest a potential link between 40 Hz entrainment and mood improvement.
Further research is warranted to confirm these preliminary findings.