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Related Experiment Video

Updated: Feb 25, 2026

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Aging and visual 3-D shape recognition from motion.

J Farley Norman1, Olivia C Adkins2, Catherine J Dowell3

  • 1Department of Psychological Sciences, Ogden College of Science and Engineering, Western Kentucky University, Bowling Green, KY, 42101-2030, USA. Farley.Norman@wku.edu.

Attention, Perception & Psychophysics
|July 27, 2017
PubMed
Summary
This summary is machine-generated.

Older adults show reduced ability to recognize 3-D object shape from visual motion cues. This age-related decline impacts shape identification regardless of how the 3-D structure is presented.

Keywords:
3D perception: Depth and shape from XMotion: In Depthaging

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Area of Science:

  • Visual perception
  • Cognitive aging
  • 3-D shape recognition

Background:

  • Visual processing declines with age, affecting object recognition.
  • Previous research indicated age does not impair solid shape discrimination.

Purpose of the Study:

  • To evaluate age-related differences in 3-D object shape recognition from optical motion.
  • To determine if age impacts shape identification using kinetic depth effect and other visual cues.

Main Methods:

  • Experiment 1: Assessed 3-D shape recognition from rotating dotted surfaces (kinetic depth effect) with varying point lifetime durations.
  • Experiment 2: Assessed identification of 3-D objects (bell peppers) defined by boundary contours, specular highlights, or both.

Main Results:

  • Significant age-related deficits were observed in 3-D shape recognition in both experiments.
  • Older adults demonstrated a reduced ability to identify 3-D shapes compared to younger adults.

Conclusions:

  • Aging impairs the visual recognition of 3-D object shape, irrespective of the specific optical motion cues used.
  • This contrasts with prior findings on shape discrimination, highlighting a specific deficit in shape identification for older adults.