PHYS20008 Lecture Notes - Lecture 8: Cerebellum, The Motor, Muscle Spindle
8 May 2019
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Rhythmic (start and stop are the only voluntary parts) Voluntary movements can be split into 3 phases: This process uses several brain centres seen above. Ideas feed into the cortex (responsible for conscious thought and processing) which is the main centre used. This is however coordinated through other centres that all feed into each other: Cerebellum (fine motor control and muscle memory. The motor cortex is what sends the signal down the spinal cord to alpha motor. The cerebellum is also very important in reflex movement for balance in the neurons activates skeletal muscles feedback loop. Eg if motor cortex doesn"t send completely right signal, cerebellum can signal to abs to help stabilise etc. Signal comes in and is received by sensory receptors. If reflex, the signal doesn"t need to be integrated by the cortex first. Instead it goes to the sensors, to the spine, then straight back to the muscles.
