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Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

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Published on: August 1, 2018

Two fixations suffice in face recognition.

Janet Hui-wen Hsiao1, Garrison Cottrell

  • 1Department of Computer Science & Engineering, University of California San Diego, La Jolla, CA 92093-0404, USA. jhsiao@cs.ucsd.edu

Psychological Science
|November 13, 2008
PubMed
Summary
This summary is machine-generated.

Optimal face recognition requires two eye fixations, primarily on the nose. Face learning involves different fixation patterns than recognition, suggesting distinct cognitive strategies for each process.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Preferred landing positions for eye fixations are established in visual word recognition.
  • The existence and location of preferred landing positions in face recognition remain less understood.
  • The optimal number of fixations for face recognition is currently unknown.

Purpose of the Study:

  • To determine if preferred landing positions exist for face recognition.
  • To identify the optimal number of eye fixations necessary for accurate face recognition.
  • To compare eye movement strategies during face learning versus face recognition.

Main Methods:

  • Eye movements were recorded during a controlled face-recognition task.
  • Participants performed a standard face-recognition task with a variable number of allowed fixations.
  • Stimuli were masked after the variable fixation period to assess recognition accuracy.

Main Results:

  • Optimal face recognition performance was achieved with exactly two fixations.
  • Recognition performance did not improve with more than two fixations.
  • The first fixation's preferred landing position was just left of the nose center; the second was at the nose center.
  • Eye fixations during face learning differed in location and duration variability compared to face recognition.

Conclusions:

  • The nose region, specifically the center, represents preferred landing positions for face recognition.
  • Two fixations are sufficient for optimal face recognition, indicating a rapid and efficient process.
  • Distinct eye movement strategies are employed during face learning and face recognition, suggesting different underlying cognitive mechanisms.