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Familiarity with words modulates interhemispheric interactions in visual word recognition.

Sangyub Kim1, Joonwoo Kim2, Kichun Nam2

  • 1Wisdom Science Center, Korea University, Seoul, South Korea.

Frontiers in Psychology
|August 15, 2022
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Summary

Bilateral redundancy gain (BRG) in word recognition is enhanced for highly familiar words, suggesting subjective familiarity influences how brain hemispheres cooperate for efficient visual processing.

Keywords:
bilateral redundancy gaininterhemispheric interactionmorphologically complex wordsubjective familiarityvisual half-field studyvisual word recognition

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Psycholinguistics

Background:

  • Bilateral redundancy gain (BRG) describes enhanced word recognition when presented to both visual fields simultaneously.
  • Subjective word familiarity may influence brain activation and processing efficiency.
  • Skilled visual word recognition is associated with high subjective familiarity.

Purpose of the Study:

  • To investigate the effect of subjective word familiarity on BRG in visual word recognition.
  • To explore how hemispheric interactions are modulated by word familiarity during lexical decision tasks.

Main Methods:

  • Participants performed lateralized lexical decision tasks with visual words presented at different subjective familiarity levels (F1-F4).
  • Response times and accuracy were measured to assess BRG.
  • Analysis focused on differences in performance between bilateral and unilateral word presentations across familiarity levels.

Main Results:

  • Significant BRG for response times was observed only for the most familiar words (F4).
  • Significant BRGs for accuracy were found across all familiarity levels (F1-F4).
  • Higher subjective familiarity correlated with enhanced BRG, particularly in reaction times.

Conclusions:

  • Subjective familiarity significantly modulates BRG in visual word recognition.
  • Increased familiarity facilitates bilateral word recognition, likely through improved cooperation between cerebral hemispheres.
  • These findings highlight the role of familiarity in optimizing hemispheric interactions for skilled visual processing.