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Updated: Jul 8, 2026
07:08
Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
Published on: August 1, 2018
Face perception in monkeys reared with no exposure to faces.
1Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Sanban-cho 5, Chiyoda-ku, Tokyo 102-0075, Japan. y.sugita@aist.go.jp
Summary
Infant monkeys possess an innate ability to recognize faces, but visual experience during a sensitive period is crucial for refining face processing and discriminating familiar species.
Area of Science:
- Developmental Psychology
- Neuroscience
- Primate Behavior
Background:
- The development of face recognition abilities in infants is a key area of research.
- Understanding the interplay between innate capacities and environmental input is crucial for cognitive development.
Purpose of the Study:
- To investigate the role of visual experience in face processing during early development.
- To determine if there is a sensitive period for the development of face discrimination abilities.
Main Methods:
- Infant monkeys were visually deprived of faces for 6-24 months.
- Monkeys were tested for face recognition and discrimination abilities before and after deprivation.
- Post-deprivation, monkeys were exposed to specific species' faces to assess learning and generalization.
Main Results:
- Monkeys showed pre-existing face recognition and discrimination abilities for both human and monkey faces.
- After deprivation and exposure, monkeys selectively discriminated the experienced face species.
- Significant difficulty was observed in discriminating the non-exposed species, indicating a critical period effect.
Conclusions:
- An experience-independent foundation for face processing exists.
- A sensitive period is critical for developing a specific and efficient face prototype.
- Early visual experience shapes the specialization of face recognition for familiar species.
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