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- Title
Inferotemporal neurons represent low-dimensional configurations of parameterized shapes.
- Authors
Op de Beeck, Hans; Wagemans, Johan; Vogels, Rufin
- Abstract
Behavioral studies with parameterized shapes have shown that the similarities among these complex stimuli can be represented using a low number of dimensions. Using psychophysical measurements and single-cell recordings in macaque inferotemporal (IT) cortex, we found an agreement between low-dimensional parametric configurations of shapes and the representation of shape similarity at the behavioral and neuronal level. The shape configurations, computed from both the perceived and neuron-based similarities, revealed a low number of dimensions and contained the same stimulus order as the parametric configurations. However, at a metric level, the behavioral and neural representations deviated consistently from the parametric configurations. These findings suggest an ordinally faithful but metrically biased representation of shape similarity in IT.
- Subjects
CEREBRAL cortex; NEURONS; MACAQUES; PHYSIOLOGY
- Publication
Nature Neuroscience, 2001, Vol 4, Issue 12, p1244
- ISSN
1097-6256
- Publication type
Article
- DOI
10.1038/nn767