Localisation of Brain Functions Flashcards
Who founded Localisation Theory
Broca and Wernicke
What is Localisation Theory
Different parts of the brain are responsible for different functions
if an area is damaged, function will be impaired
The cortex of both hemispheres is divided into four lobes
each lobe has a different function
How did Localisation Theory challenge Holistic Theory
Because holistic theory stated that all parts of the brain were involved in the processing of thoughts and actions
Phineas Gage (evidence of localisation)
While working on the railways, a metal rod was blasted through Gage’s left cheek behind his eye and through his brain and skull
Gage survived, but became rude, aggressive and irritable due to the damage done to his frontal lobe
What are the 4 lobes
Frontal Lobe
Paretial Lobe
Occipital Lobe
Temporal Lobe
Where is the motor area
Frontal lobe
Where is Wernicke’s area
Temporal lobe
Where is Broca’s area
Frontal lobe
What does the Motor Area do
Controls voluntary movement in the opposite side of the body
Damage may result in loss of control over fine movements
What does the Somatosensory Area do
Where sensory information from the skin is represented
The more sensitive the area, the more space is devoted
What does the Visual Area do
Each eye sends information from the right visual field to the left visual cortex, and from the left visual field to the right visual cortex
Damage to the left hemisphere can produce blindness in part of the right visual field of both eyes
What does the Auditory Area do
Analyses speech based information
Damage could cause partial hearing loss
Damage to specific areas may affect the ability to understand language
Where is the Motor Area
Back of Frontal Lobe
Where is the Somatosensory Area
Front of Paretial Lobe
Where is the Visual Area
Occipital Lobe
