Publicação: Evaluating the effect of gamma binaural beat on working memory performance and brain activity
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The cognitive function of memory undergoes development from childhood to aging and
can be stimulated and improved by various techniques. Binaural beats (BB) have been
proposed as a potential enhancement method for memory performance and treatment of
psychological disorders. BB stimulation in the gamma frequency band (30-100Hz) has
been associated with increased transmission of information across functional neural
circuits, leading to enhanced memory performance. The current literature presents
controversial approaches, including variability in stimulation parameters and participant
numbers. Few studies analyzed the correlation between BB stimulation in the gamma
frequency band and memory tasks. This makes it challenging to determine the optimal
therapeutic stimulation parameters and underlying neural dynamics involved in gamma
frequency stimulation. To address these limitations, this study proposes a detailed
methodology to better understand the relationship between gamma-BB stimulation and
memory performance. We collected electroencephalographic data (EEG) from 30
subjects in 3 phases - a baseline, with gamma-BB stim, and control stim - in a resting
state, with eyes closed - and while performing memory tasks. Both behavioral and
neurophysiology data were analyzed. The study found no significant changes in memory
task performance or EEG power spectral density between experimental and control
conditions. However, significant differences in brain connectivity were observed using
phase-locked value (PLV) analysis in frontal and parietal areas, which are essential for
memory processes. This study highlights the importance of exploring the underlying
neural dynamics involved in BB stimulation and memory performance. The findings
provide insight into using PLV as a metric for measuring brain connectivity and its
potential application in future research. This research contributes to the development of
optimal therapeutic stimulation parameters for improving memory performance.
Abstract
The cognitive function of memory undergoes development from childhood to aging and
can be stimulated and improved by various techniques. Binaural beats (BB) have been
proposed as a potential enhancement method for memory performance and treatment of
psychological disorders. BB stimulation in the gamma frequency band (30-100Hz) has
been associated with increased transmission of information across functional neural
circuits, leading to enhanced memory performance. The current literature presents
controversial approaches, including variability in stimulation parameters and participant
numbers. Few studies analyzed the correlation between BB stimulation in the gamma
frequency band and memory tasks. This makes it challenging to determine the optimal
therapeutic stimulation parameters and underlying neural dynamics involved in gamma
frequency stimulation. To address these limitations, this study proposes a detailed
methodology to better understand the relationship between gamma-BB stimulation and
memory performance. We collected electroencephalographic data (EEG) from 30
subjects in 3 phases - a baseline, with gamma-BB stim, and control stim - in a resting
state, with eyes closed - and while performing memory tasks. Both behavioral and
neurophysiology data were analyzed. The study found no significant changes in memory
task performance or EEG power spectral density between experimental and control
conditions. However, significant differences in brain connectivity were observed using
phase-locked value (PLV) analysis in frontal and parietal areas, which are essential for
memory processes. This study highlights the importance of exploring the underlying
neural dynamics involved in BB stimulation and memory performance. The findings
provide insight into using PLV as a metric for measuring brain connectivity and its
potential application in future research. This research contributes to the development of
optimal therapeutic stimulation parameters for improving memory performance.
Palavras-chave
working memory, brain stimulation, binaural beats, EEG, power spectral density, functional connectivity, memory performance
Citação
BORGES, Ludymila Ribeiro. Evaluating the effect of gamma binaural beat on working memory performance and brain activity. 2023. 81 f. Tese (Doutorado em Engenharia Elétrica) - Universidade Federal de Uberlândia, Uberlândia, 2023. DOI http://doi.org/10.14393/ufu.te.2023.215
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