Flashcards in Cerebral Hemispheres Deck (38)
What are the dips and elevations on the brain surface called?
Where does the central sulcus run from?
Starts at the lateral sulcus and travels to the medial surface
What is the corpus callosum?
A collection of axons going between each of the hemispheres
connects the 2 hemispheres
What part of the dural layers is found in the sulci and gyri?
What part of the cortex does motor innervation come from?
Anterior part of the cerebral hemisphere
What part of the cortex does sensory innervation come from?
Posterior part of the cerebral hemisphere
What is the limbic system responsible for?
Storage and retrieval of processed information
What type of information does the frontal lobe send?
What is area 4 of the frontal lobe?
Precentral gyrus (Primary motor cortex)
What is the inferior frontal gyrus known as?
Broca's area of motor speech (area 4,45)
What is the role of the prefrontal cortex?
Cognitive functions of higher orders - intellect, judgement, prediction, planning
What type of information does the parietal lobe deal with?
What are areas 3,1, and 2 of the parental lobe?
Primary sensory area
What is the role of the superior parietal lobe?
Interpretation of general sensory information and conscious awareness of other side of body
What does the inferior parietal lobe deal with?
Language functions (dominant hemisphere)
What is the main role of the temporal lobe?
What is the found in the superior temporal gyrus?
Primary auditory cortex
What does the inferior temporal surface deal with?
Conscious appreciation of smell
What is the auditory association area known as on the dominant hemisphere?
Wernicke's area (crucial for understanding spoken word)
What is the primary role of the occipital lobe?
Where is the primary visual cortex found?
Either side of calcimine sulcus (medial surface of occipital lobe)
What is the role of the visual association cortex?
Interpretation of visual images
What is the role of the limbic lobe?
Emotional aspects of behaviour
What comprises the limbic lobe?
What is aphasia?
Problem with speech sue to damage to one or more speech areas in the brain
What is Broca's aphasia?
Misses small words
Aware of speech difficulties
Weakness/paralysis on one side
What causes Broca's aphasia?
Damage to frontal lobe
What is Wernicke's aphasia?
Fluent speech with meaningless words
Can't understand speech
Unaware of mistakes
What causes Wernicke's aphasia?
Damage to temporal lobe