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Auditory Neural Entrainment and Selective Attention

An EEG and behavioral study investigating whether frequency-modulated auditory stimulation influences selective attention.

  • EEG
  • Auditory Attention
  • PsychoPy
  • MATLAB
  • R
EEG equipment used during an auditory attention experiment
Year
2025–2026
Role
Lead researcher
Status
Preliminary analysis

Overview

The research question

Certain activities can make our brain produce characteristic patterns of neural synchronization. These patterns can be measured as power in specific freqeuncy bands (e.g., delta = deep sleep; alpha = relaxed wakefulness and selective attention; beta = active concentration).

The processes during selective attention (focusing on a target while ignoring distractions), are associated with increased alpha band synchronization, which reflects the active suppression of task-irrelevant neural processing. We also know that these rhythmic patterns can be externally influenced through neural entrainment, which is the synchronization of brain oscillations to rhythmic auditory stimuli.

Can externally induced alpha synchronization through neural entrainment engage selective attention mechanisms in the brain — effectively using sound to improve the brain's attentional abilities?

Project contributions

My role throughout the research lifecycle

I contributed across the project from experimental design and participant testing through EEG analysis and scientific communication.

  1. Literature Review

    Reviewed literature on auditory entrainment, selective attention, frequency-modulated stimulation, and EEG methodologies.

  2. Experimental Design

    Helped design the study, participant workflow, stimulation conditions, documentation, and statistical approach.

  3. Experiment Development

    Generated auditory stimuli and developed the behavioral experiment using Python and PsychoPy.

  4. Participant Recruitment & EEG Collection

    Recruited and scheduled participants, prepared EEG caps, monitored recording quality, and conducted experimental sessions.

  5. EEG & Behavioral Analysis

    Preprocessed EEG data using MATLAB and EEGLAB and analyzed behavioral performance in R.

  6. Scientific Communication

    Produced figures, interpreted preliminary findings, and presented the project at the Society for Music Perception and Cognition conference.

Methods

How the study was designed

The project combined behavioral testing, frequency-modulated auditory stimulation, EEG recording, and statistical analysis to investigate selective attention.

Participants

Adult volunteers completed the study after providing informed consent. Participants were recruited, screened, scheduled, and guided through the experimental procedures.

Behavioral Task

Participants completed a modified flanker task before and after auditory stimulation. Reaction time and accuracy were recorded to assess changes in selective attention.

Auditory Stimulation

Participants listened to frequency-modulated auditory stimuli designed to target alpha- or beta-range neural activity between the pre- and post-stimulation task blocks.

EEG Recording

EEG activity was recorded with a BrainVision system. Sessions included cap preparation, electrode setup, impedance checks, event synchronization, and troubleshooting.

EEG Preprocessing

EEG data were organized and preprocessed in MATLAB using EEGLAB, including inspection, filtering, event handling, artifact correction, and preparation for neural analyses.

Behavioral Analysis

Reaction time, accuracy, and congruency effects were analyzed in R using visualizations and statistical models comparing performance across time and stimulation conditions.

Results

Preliminary findings

Data collection is ongoing. These preliminary analyses summarize behavioral trends observed in the current participant sample (N = 8).

Behavioral results comparing reaction time and congruency cost across stimulation conditions.
Figure 1. Preliminary behavioral performance before and after auditory stimulation. (A) Mean reaction time by stimulation condition. (B) Reaction time congruency cost (incongruent − congruent) by stimulation condition. Individual participant trajectories are shown with solid lines; dashed lines indicate condition means.

Tools

Technology and methods

BrainVisionPsychoPyEEGLABMATLABRPythonBehavioral AnalysisEEG Preprocessing

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