Parts of the brain & function

Motor Centers

  • sends messages via relay nurones thru the CNS. motor nurones in the PNS then receives the messages and send this to the relevent muscles to action movement

  • responsible for complex volentary motor movements

  • located in the fontal lobe

  • sends messages to muscles from brain and spinal cord

  • contralateral

other areas associated with movement

  • brain and spinal cord: coordinates movement

  • premotor: plans movement prior to executing it

  • prefonatal cortex: stores sensory info proir to movement

Somatosensory Centers

  • located in the front of the parental lobe next to the motor cortex. sensory info from the skin is represented here

  • somatosensory centers - refers tot he sensations of the body detects sensory events arising form different regions of the body

  • percieves touch, more sensitive body parts need a larger area of the somatosensory cortex

  • both hems have a somatosensory cortex, with the cortex on one side of the brain receiving sensory info from the other side of the body

Visual centers

Primary visual cortex

  • contralateral

  • has 2 visual cortices (one in each hem)

  • PVC is in the occipital lobe in the back of the brain

  • more specificaly within the primary visual cortex

  • individuals who have damage report no vision, awake in dreams

  • the visual info is transmitted along 2 pathways, one containing components of the visual feilds (shape and colour) and the other being involved in the location with in the visual feild (what is near to u)