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Definition
| inability to make voluntary movements in the absence of paralysis or other motor or sensory impairment especially an inability to make proper use of an object |
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Definition
| cognitive disorder with severe symptoms including greatly impaired social interaction, a bizarre and narrow range of interests, marked abnormalities in language and communication, and fixed, repetitive movements |
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Definition
| group of brain disorders that result from brain damage acquired perinatally |
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Definition
| bundle of nerve fibers directly connecting the cerebral cortex to the spinal cord, branching at the brainstem into a same-side lateral tract that informs movement of limbs and digits and an opposite-side ventral tract that informs movement of the trunk; also called pyramidal tract |
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Term
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Definition
| loss of incoming sensory input usually due to damage to sensory fibers; also loss of any afferent input to a structure |
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Definition
| hypothetical condition whereby disease or damage in the highest levels of the nervous system would produce not just loss of function but a repertory of simpler behaviors as seen in animals that have not evolved that particular brain structure |
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Definition
| neural spatial representation of the body or areas of the sensory world perceived by a sensory organ |
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| dorsal spinothalamic tract |
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Definition
| pathway that carries fine-touch and pressure fibers |
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Definition
| skin that does not have hair follicles but contains larger numbers of sensory receptors than do other skin areas |
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Definition
| perceptual ability to discriminate objects on the basis of touch |
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Term
| ventral spinothalamic tract |
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Definition
| pathway from the spinal cord to the thalamus that carries information about pain and temperature |
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Definition
| representation of the human body in the sensory or motor cortex; also any topographical representation of the body by a neural area |
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Definition
| symptom of brain damage that results in excessive involuntary movements, as seen in Tourettes syndrome |
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Definition
| symptom of brain damage that results in a paucity of movement, as seen in Parkinson's disease |
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Definition
| reflex requiring one synapse between sensory input and movement |
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Term
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Definition
| movement modules preprogrammed by the brain and produced as a unit |
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Term
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Definition
| perception of pain and temperature |
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Term
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Definition
| hypothetical neural circuit in which activity in fine-touch and pressure pathways diminishes the activity in pain and temperature pathways |
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Definition
| paralysis of the legs due to spinal-cord injury |
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Term
| periaqueductal gray matter |
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Definition
| nuclei in the midbrain that surround the cerebral aqueduct joining the third and fourth ventricles; PAG neurons contain circuits for species-typical behaviors (e.g., female sexual behavior) and play an important role in the modulation of pain |
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Term
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Definition
| perception of the position and movement of the body, limbs, and head |
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Term
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Definition
| paralysis of the legs and arms due to spinal-cord injury |
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Term
| rapidly adapting receptor |
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Definition
| body sensory receptor that responds briefly to the onset of a stimulus on the body |
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Term
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Definition
| body sensory receptor that responds as long as a sensory stimulus is on the body |
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Definition
| pain felt on the surface of the body that is actually due to pain in one of the internal organs of the body |
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Definition
| automatic response in which the hind limb reaches to remove a stimulus from the surface of the body |
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Definition
| innate pattern of movement coded by the motor cortex |
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Term
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Definition
| part of the thalamus that carries information about body sense to the somatosensory cortex |
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Term
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Definition
| a set of receptors in the middle ear that indicate position and movement of the head |
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