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Gamma-Band Auditory Steady-State Response and Attention: A Systemic Review
Giedre Matulyte1, Vykinta Parciauskaite1, Jovana Bjekic2
1Life Sciences Centre, Institute of Biosciences, Vilnius University, Sauletekio ave 7, LT-10257 Vilnius, Lithuania.
Brain Sciences
|September 28, 2024
Summary
Attention
Area of Science:
- Neuroscience
- Auditory Neuroscience
- Cognitive Neuroscience
Background:
- Auditory steady-state response (ASSR) reflects the brain's entrainment to auditory stimuli.
- Gamma-band ASSR shows potential for neuropsychiatric diagnosis and brain-computer interfaces.
- The influence of attention on gamma-band ASSR remains debated due to inconsistent findings.
Purpose of the Study:
- To systematically review existing literature on the attentional modulation of gamma-band ASSRs.
- To synthesize findings regarding attention's effect on gamma-band ASSR.
- To identify factors contributing to inconsistencies in research results.
Main Methods:
- Systematic literature search yielding 1283 papers.
- Inclusion of 49 original studies after filtering.
- Analysis of methodological variations across studies.
Main Results:
- A majority of studies indicated ASSR modulation with attention levels.
- Some studies reported mixed or non-significant attention effects.
- Methodological diversity (stimulus, recording, attention tasks) was a key factor in result variability.
Conclusions:
- While many studies suggest attention modulates gamma-band ASSRs, inconsistencies persist.
- Variations in methodology, training, individual differences, and focus duration contribute to equivocal results.
- Further standardization may be needed to clarify attention's role in gamma-band ASSR.
