Motor Systems and Movement Control notes
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Lecture 17 Motor control – Beyond reflexes: swimming in a marine snail Fixed action patterns are innate behaviours triggered by a sign stimulus/releaser Fixed action patterns are centrally controlled.There has been 2 hypothesis for the control of Fixed Action Patterns:Hypothesis 1: FAPs ...
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Unit 3 - Neurodegenerative Diseases be able to describe how motor commands are relayed to skeletal muscle and the brain circuitry that controls them be able to explain the role of the basal ganglia and dopaminergic systems in motor movement Dopamine - a...
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Neurodegenerative Diseases Neurodegenerative Diseasesbe able to describe how motor commands are relayed to skeletal muscle and the brain circuitry that controls them be able to explain the role of the basal ganglia and dopaminergic systems in m...
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Basal Ganglia Pathways Direct Pathway = Disinhibition of the ThalamusMotor Cortex excites the Striatum (cauduate nucleus and putamen)Leads to inhibitory signals to the Globus pallidus internal Also leads to inhibitory signals to the Substan...
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Untitled Pyramidal Tract: The pyramidal tract (or corticospinal/corticobulbar tract) is the major motor pathway responsible for voluntary movement. It carries efferent (motor) signals fr...
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Cerebellum
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Motor cortex Movement Descending motor control Brainstem circuits
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Motor Systems- Tracts, UMN & LMN Motorneurons Usually very large & multipolar Many located in CNS and project axons outside to directly or indirectly control muscle actions Long axons that travel to an effector organ- a muscle or a gland They are the...
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Cerebellum - created from Mind Map Calculates the best way to coordinate muscle contraction Recognizes and predicts sequences & events during complex movements Non-Motor functions like puzzle-solving skills
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NE203 Midterm 2 Chemical SensingThe chemotaxis system is used by bacteria to swim towards a target. Form of detecting environmental substances via chemical sensationGustation and olfaction detect chemicals in the environment