Localisation Of The Brain Flashcards
What is the motor cortex
Motor cortex controls voluntary movements
Both hemispheres have a motor cortex controlling muscle on the opposite side of the body
Different areas of the motor cortex cintrol different parts of the body and these are in the same sequence as in the body
What is the sensorimotor cortex
This registers sensory information from different areas of the body. Both hemispheres have a sensorimotor cortex where each side receives information from opposite sides of the body
How is visual information recieved
Processing information starts when light enters the eye and strikes the photoreceptors on the retina at the back of the eye. Nerve impulses travel up the optic nerve to the thalamus and are passed on the to visual cortex
The right hemisphere’s cortex process visual information received by the left visual cortex and visa Verda
What do different regions of the visual cortex process
Colour, shape and movement
How is auditory information processed
Begins In the inner ear cochlea. Where sound waves are conveyed into nerve impulses and travel along the auditory never to the brain stem
This decode duration and intensity of doubt
The auditory cortex recognised the sound and forms an appropriate response to that sound
What is the Broca’s area
Main centre of speech production
If th the are lesions in t he left hemisphere of the brain then you have speech problems
Not in rhgiht hemisphere
Also involved with performing complex cognitive tasks
What is the wernickes area
Speech comprehension
Lesions in the brain could produce but not understand language
What are the two parts the wernickes area is divided into
Motor region and the sensory area
What are the broca ad wernicke area connected by
A loop whgih ties together language and production
Evaluation:what does the equipotentiallity theory argue
That basic brain functions (motor cortex and sensory functions) ate controlled by localised Brain areas
Higher cognitive functions are not localised
Other parts of the brain can take over the damaged function
What also many be a problem if it is damaged (not the part of the brain)
If the connecteion are damaged brain sites are interdependent and cuad failures to function
For example, damage between the visual cortex and wernickes area lead to inability to read
How do gender differences make a difference
Women have larger bricks are and wernickes area than Mrs
Women have a greater use of language
