Lecture 5 Flashcards
1
Q
Broca’s area
A
- frontal part of left hemisphere of right handed people
- involved in speech function
2
Q
Broca’s aphasia
A
deficit in ability to produce language
3
Q
Wernicke’s area
A
- left hemisphere of most people
- responsible for the ability to comprehend spoken language
4
Q
Wernicke’s aphasia
A
ability to produce words not affected, loss in abillity to grasp meaning
5
Q
Gyri
A
- surface elevations
- increase surface area of brain
6
Q
Sulci
A
- grooves
- divide the cerebral cortex into gyri
- central sulcus seperates frontal & parietal lobes
- temporal & occipital lobes are enclosed by sulci
7
Q
Fissures
A
- deep grooves
- longitudinal fissures seperates the 2 cerebral hemispheres
8
Q
Motor cortex
A
- region involved in voluntary muscle movements
- processed by frontal lobe
- functions :
1. coordination of muscle movement
2. planning of complex movements
3. learning through imitation & empathy - comprises of primary motor cortex, premotor & supplementary motor
9
Q
primary motor cortex
A
- large pyramidal cells of precentral gyri
- long axons - pyramidal tracts
- allow conscious control of precise skilled voluntary movements
- provides focused movements, appropriate strength and direction of motion
10
Q
premotor cortex
A
- anterior to precentral gyrus
- controls learned, patterned behaviour
- coordinates simultaneous actions
- provides gross coordinated movements of arms, legs and head
- involved in the planning on movements that depend on sensory feedback
11
Q
supplementary motor area
A
- located on the medial surface of cortex, anterior to primary motor cortex
- provides bilateral movement in groups of muscle
- responsible for planning and execution of planned movements
12
Q
Sensory areas
A
- occipital lobe - making sense of visual info & object recognition ( visual cortex )
- parietal lobe - assessing touch, temp, pressure, pain
- temporal lobe - processing hearing info
- frontal lobe - processing taste, flavour
13
Q
primary somatosensory cortex
A
- located in postcentral gyri, anterior part of parietal lobe
- receives sensory info from skin, skeletal muscles, joints
- capable of spatial discrimination
14
Q
Association areas
A
- spread throughout 4 lobes
- functions :
- organising & giving meaning to info from sensory + motor areas
- personality and controlling emotional behavious
- spatial awareness and reasoning
- memory processing
15
Q
prefrontal cortex
A
- most complicated cortical region
- involved with intellect, recall and personality
- contains working memory needed for judgement, reasoning and conscience
- development depends on feedback from social environment
