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Definition
| when load is increased on a muscle, and the gamma afferents adjust the tension of the intrafusal muscles to keep the spindle on the air |
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Definition
| gamma motor neuron -> Ia afferent -> alpha motor neuron -> muscle....idea of Merton |
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| low power device controls a high power one (spindle controls muscle) |
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Definition
| action potentials to gamma afferents |
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Definition
| once load is released on the muscle, gamma motor neurons send signal that gets to alpha motor neurons which follows up to achieve the new length. |
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Definition
| what really happens - coactivation of alpha and gamma motor neurons. gamma motor neurons supplement the discharge of Ia afferents, thus supplementing the activity of the alpha motor neurons |
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Definition
| in directing movement, nervous system specifies a joint position at which the net forces acting upon the joint are zero |
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Definition
| changing the starting position of a frog limb and then stimulating the brain so that the limb moves, means that the limb ends up in the same ending position. means brain takes into consideration starting position |
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| stimulus makes body withdraw limb |
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Definition
| will override other reflexes |
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Definition
| pattern of contraction changes depending on location of stimulus |
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Definition
| neurons that lie entirely inside the spinal cord and extend for long distances, responsible for long spinal reflexes |
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Definition
| sporadic series of twitches - can be seen under the skin and in the EMG |
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Definition
| asynchronous contraction in muscle fibers - can only be seen on an EMG |
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