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Eye blinking, musical processing, and subjective states-A methods account.

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Spontaneous eye blinking increases during music listening, offering an implicit measure of subjective states. This study also provides methods for analyzing blink data from eye trackers.

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absorptionemotioneye blinkeye trackingmixed effects modelsmusicoutlier analysis

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Area of Science:

  • Affective sciences
  • Psychophysiology
  • Cognitive neuroscience

Background:

  • Self-reports are common for assessing subjective states but lack implicit measures.
  • Spontaneous eye blinking is an understudied physiological correlate of subjective experiences.
  • Eye trackers can record blink activity, often treated as data loss.

Purpose of the Study:

  • To investigate spontaneous eye blinking as an implicit measure of subjective states during music listening.
  • To explore and propose methods for analyzing blink activity from eye-tracking data.
  • To examine the relationship between blinking, music, and subjective states like valence, arousal, and absorption.

Main Methods:

  • Replicated increased blink rates during music compared to silence.
  • Analyzed blink data using infra-red eye trackers across multiple datasets.
  • Employed mixed-effects models and proposed data-driven outlier rejection procedures for blink analysis.

Main Results:

  • Increased blink rates during music listening were replicated and not linked to valence or arousal.
  • Higher felt absorption correlated with reduced blink rates.
  • Methodological analyses confirmed the reliability of blink effects across different data treatments.

Conclusions:

  • Spontaneous eye blinking serves as a reliable, implicit indicator of subjective states, particularly during auditory stimulation.
  • Proposed analytical methods enhance the utility of eye-tracking data for studying blinks.
  • Encourages researchers to incorporate blink analysis into studies of subjective states and cognition.