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Related Experiment Video

Updated: May 1, 2026

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Investigating Motor Skill Learning Processes with a Robotic Manipulandum

Published on: February 12, 2017

Neural and behavioral similarity-driven tuning curves for manipulable objects.

Daniela Valério^1,2, André Peres^3,4, Fredrik Bergström^3,4,5

¹Université Paris Saclay, INSERM, CEA, Cognitive Neuroimaging Unit, NeuroSpin Center, Gif-sur-Yvette, France.

Imaging Neuroscience (Cambridge, Mass.)

|August 13, 2025

Summary

The brain organizes object knowledge based on real-world similarity. Increasing object similarity leads to slower recognition and weaker neural signals, especially in visual processing areas.

Keywords:

fine-grained distinctions man-made manipulable objects object similarity release-from-adaptation paradigm tools

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Last Updated: May 1, 2026

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Published on: February 12, 2017

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Published on: August 8, 2019

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Area of Science:

Cognitive Neuroscience
Neuroimaging
Visual Perception

Background:

Human visual system efficiently recognizes objects at various levels of detail.
Understanding fine-grained object knowledge organization is limited.
Previous research focused on large-scale brain organization of objects.

Purpose of the Study:

Investigate the fine-grained organization of object knowledge.
Determine if manipulable objects are represented based on similarity.
Explore the neural basis of fine-grained object discrimination.

Main Methods:

Behavioral experiment measuring reaction times.
Functional magnetic resonance imaging (fMRI) release from adaptation paradigm.
Manipulated object similarity using feature overlap.

Main Results:

Increased object similarity resulted in slower reaction times.
Higher object similarity led to weaker fMRI release from adaptation.
Identified similarity-driven tuning curves in visual cortex regions (medial fusiform, collateral sulcus, etc.).

Conclusions:

Object processing and representation in the brain reflect real-world similarity parametrically.
The brain's organization of object knowledge supports fine discriminations.
Neural representations are tuned to object similarity, impacting recognition efficiency.