Term
| Sensiomotor System is Hierarchically Organized |
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Definition
-functional segregation
-sensorimotor system information mainly flows down |
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Term
| Motor Output Guided by Sensory Input |
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Definition
-sensory feedback directs the responses
-mainly controlled unconsciously at lower levels |
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Term
| Learning can change nature/locus of sensorimotor control |
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Definition
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Term
| Posterior Parietal Association Cortex |
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Definition
integrates the different types of information
-knowin current body placement
-and knowing external objects in relation to oneself |
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Term
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Definition
disorder of voluntary movement thats not attributable to simple motor deficit
ex.can make movements in context, but cannot make movements when requested to do so |
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Term
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Definition
| disturbance in ability to respond to stimuli on the side of the body opposite the side of the brain lesion |
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Term
| Dorsolateral Prefontal Association Cortex |
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Definition
| -role in evaluation of external stimuli |
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Term
| Dorsolateral Prefontal Association Cortex |
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Definition
| -role in evaluation of external stimuli |
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Term
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Definition
| -receives much input from association cortex and sends it to Primary |
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Term
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Definition
| neurons that fire when individuals performs a particular goal-directed hand movement when he/she sees that same movement performed by another |
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Term
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Definition
| not the only, but a point of departure for sensorimotor signals. Organized somatopically layer, to depict the motor homunculus |
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Term
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Definition
| Process of identifying things by touch |
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Term
| Lesions on Primary Motor Cortex |
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Definition
| -astereognosia, deficit in stereognosia |
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Term
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Definition
-%10 of the brain mass, contains more than half its neurons
-damage to cerebellum is devastating |
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Term
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Definition
| -not involved in a descending or ascending pathway, but part of a neural loop that receives info from various places |
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Term
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Definition
| -not involved in a descending or ascending pathway, but part of a neural loop that receives info from various places |
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Term
| Ventro-medial cortico-brainstem-spinal tract |
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Definition
1)tectum-receives auditory&visual info about spatial location
2)vestibular nucleus-info about balance from semicircular canals in ears
3)reticular formation-regulates complex movements, such as walking/jumping
4)motor nuclei-controls facial muscles |
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Term
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Definition
embedded in the tendons which connect skeletal muscle to bone
-respond to increases in muscle tension |
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Term
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Definition
| are embedded in muscle tissue itself, respond to changes in muscle length |
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Term
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Definition
| knee jerk reflex test, a "stretch reflex" |
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Term
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Definition
| -not monosynaptic, involves one interneuron and takes place in 1.6 milliseconds |
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Term
| Response Chunking hypothesis |
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Definition
practice combines sensorimotor programs. novice typist types each key, but a skilled typist has letters activated as grouped units.
-can be used for higher-order chunks |
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Term
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Definition
-brain is highly active in dorsolateral prefrontal cortex in learning a new task. but is inactive after it is well practiced
-also the cerebellum works far less hard after learning |
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