Lecture 17.Robotics - Todays Lecture We will discuss the...

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Today’s Lecture We will discuss the motor pathway and then consider something truly remarkable. I will show how scientists are able to “read the mind” and know what someone is about to do even before they do it!!! They can “read the mind” by monitoring the action potentials from the motor cortex of monkeys and men.
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Human Brain has Four Lobes : somatosenory motor Auditory visual
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skin Spinal cord Motor pathway Cerebral hemisphere Brain stem muscle thalamus Somatosensory cortex 1st synapse in medulla Motor cortex skin
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Motoneuron innervates muscle fiber Cortiospinal tract Pyramidal decussation
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Motor homunculus
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microelectrode Neurons in the monkey’s cortex
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In 1982, Apostolos Georopoulos at Johns Hopkins conducted an experiment on behaving monkeys to evaluate how individual neurons in the monkey’s motor cortex code for specific movements that the monkey intends to make. Classic Experiment on the Motor Cortex
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* 1 2 3 2 5 4 3 * * * 5 * Monkey is trained to move her hand in different directions (1-5)
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* 1 2 * * 5 * 1 2 4 * 4 5 Monkey begins to move his arm 2 3 1 5 4 3
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