The principles driving the organization of the ventral object-processing stream remain unknown. Here, we show that stimulus-specific repetition suppression (RS) in one region of the ventral stream is biased according to motor-relevant properties of objects. Quantitative analysis confirmed that this result was not confounded with similarity in visual shape. A similar pattern of biases in RS according to motor-relevant properties of objects was observed in dorsal stream regions in the left hemisphere. These findings suggest that neural specificity for "tools" in the ventral stream is driven by similarity metrics computed over motor-relevant information represented in dorsal structures. Support for this view is provided by converging results from functional connectivity analyses of the fMRI data and a separate neuropsychological study. More generally, these data suggest that a basic organizing principle giving rise to "category specificity" in the ventral stream may involve similarity metrics computed over information represented elsewhere in the brain.

Action-related properties shape object representations in the ventral stream / Mahon, Bz; Milleville, Sc; Negri, Ga; Rumiati, Raffaella; Caramazza, A; Martin, A.. - In: NEURON. - ISSN 0896-6273. - 55:3(2007), pp. 507-520. [10.1016/j.neuron.2007.07.011]

Action-related properties shape object representations in the ventral stream

Rumiati, Raffaella;
2007-01-01

Abstract

The principles driving the organization of the ventral object-processing stream remain unknown. Here, we show that stimulus-specific repetition suppression (RS) in one region of the ventral stream is biased according to motor-relevant properties of objects. Quantitative analysis confirmed that this result was not confounded with similarity in visual shape. A similar pattern of biases in RS according to motor-relevant properties of objects was observed in dorsal stream regions in the left hemisphere. These findings suggest that neural specificity for "tools" in the ventral stream is driven by similarity metrics computed over motor-relevant information represented in dorsal structures. Support for this view is provided by converging results from functional connectivity analyses of the fMRI data and a separate neuropsychological study. More generally, these data suggest that a basic organizing principle giving rise to "category specificity" in the ventral stream may involve similarity metrics computed over information represented elsewhere in the brain.
2007
55
3
507
520
10.1016/j.neuron.2007.07.011
https://doi.org/10.1016/j.neuron.2007.07.011
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2000824/
Mahon, Bz; Milleville, Sc; Negri, Ga; Rumiati, Raffaella; Caramazza, A; Martin, A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/16142
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