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Expectations guide predictive eye movements and information sampling during face recognition.

Annika Garlichs1,2, Mark Lustig1,3, Matthias Gamer4

  • 1Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Iscience
|October 1, 2024
PubMed
Summary
This summary is machine-generated.

Expectations guide eye movements during face recognition. People look at expected facial features first, supporting predictive processing theories of how we see faces.

Keywords:
Biological sciencesCognitive neuroscienceResearch methodology social sciencesSocial sciences

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception

Background:

  • Context significantly impacts face recognition.
  • Predictive processing theories propose context-driven predictions guide sensory evidence sampling.
  • The precise influence of expectations on visual information sampling in face perception remains unclear.

Purpose of the Study:

  • To investigate how expectations affect eye movements during face anticipation and recognition.
  • To examine the role of predictive processing in guiding visual attention during face perception.

Main Methods:

  • Two eye-tracking experiments were conducted with 34 participants each.
  • Participants viewed cued face morphs with expected/unexpected features and clear expected/unexpected faces.
  • Eye movements were recorded to analyze visual sampling patterns.

Main Results:

  • Participants made predictive saccades towards expected facial features.
  • Expected facial features were fixated more often and for longer durations than unexpected features.
  • In face morphs, early eye movements targeted expected features, followed by unexpected ones, indicating dual top-down and bottom-up influence.

Conclusions:

  • Expectations actively influence face processing by directing predictive and early eye movements.
  • Eye movements are guided towards anticipated informative locations, supporting predictive processing models.
  • This research provides strong evidence for the role of top-down expectations in visual information sampling during face perception.