| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
Cross-modality is an important aspect of material perception. We tested whether the visuo-haptic experience of the real objects made of various materials affects the behavioral responses and the neural representation of monkeys. The behavioral responses to the real objects in a grasping task dramatically differed across the material categories, and long-term visuo-haptic exposure changed the pulling force applied to the objects. After the experiences, but not before, the activity pattern of the posterior inferior temporal cortex measured by fMRI showed correlation with visual and haptic material properties. Many neurons recorded electrophysiologically from the inferior temporal cortex tended to respond more strongly to stimuli belonging to one or a few material categories though the category selectivities were not perfect. These results highlight the importance of cross-modal experience through daily behavior for cross-modality of material perception.
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