| Title: |
Premotor cortex and the recognition of motor actions. |
| Authors: |
Rizzolatti, Giacomo , Fadiga, L , Gallese, V , Fogassi, L |
| Year: |
1996 |
| Journal: |
Brain Res Cogn Brain Res |
| Volume: |
3 |
| Issue: |
2 |
| Pages: |
131-41 |
| URL: |
http://www.ncbi.nlm.nih.gov/pubmed/8713554 |
| Language: |
English |
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From Self Observation to Imitation: Visuomotor Association on a Robotic Hand (Chaminade et al.)
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This model recreates the imitative act of action contagion by spontaneously imitating a perceived hand posture performed by another external hand. Motor babbling/ associative learning through a biologically plausible Hebbian Like rule is stored in a higher order Hopfield Network that is tested with unseen postures and various types of hands to see the potential for early imitation behaviors and action contagion.
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HAMMER - Hierarchical Attentive Multiple Models for Execution and Recognition of Actions (Demiris - Khadhouri)
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The HAMMER model has dual roles of competitively selecting and executing an action as well as perceiving the action when being performed by a demonstrator. It uses a series of inverse models which output commands to achieve a set of goals as well as forward models to predict the next state of the controlled system. The prediction is then verified at the next time step and fed back into the inverse model to tune its confidence parameters. That way, the inverse model can be constantly tuned to produce more accurate output results, and thus the overall system will also produce more accurate results. A top-down control of attention is also integrated using one or a combination of two different methods: Round-Robin and Winner-Take-All in order to decrease computation and increase performance.
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Imitating Neonatal Motor Babbling (Chaminade et al.)
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This model assess the extent of imitation features that can be bootstrapped by combining
a robotic human-like hand with a minimal visual retina using biologically inspired associative network to reproduce an infant’s early visuomotor experiences.
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Visuomotor associated model based on a robotic hand (Chaminade et al.)
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This model combines video capture, low-level hand control server and high-level coordinator to provide a visuomotor associated Hebbian-like learning resulting from self-observation. The model is tested in terms of generalization between agents and generalization between gestures.
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Action recognition in the premotor cortex
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imaging
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Record electrical activities of mirror neurons of two monkeys observe agent-object interactions.
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F5 mirror properties
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generic
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Mirror F5 neurons respond during observation of a grasping movement (di Pellegrino et al., 1992; Rizzolatti et al., 1996; Gallese et al., 1996). Like other F5 neurons, mirror neurons are active when the monkey performs a particular class of actions, such as grasping, manipulating, and placing. However, in addition the mirror neurons become active when the monkey observes the experimenter or another monkey performing an action.
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