Brain and Neuropsychology Flashcards
Frontal Lobe
- decision-making
- movement (motor cortex)
Temporal Lobe
- speech
- memory
Parietal Lobe
- perception
- sense of touch
- prosopagnosia
Occipital Lobe
Visual Information
Cerebellum
Motor skills
Lateralisation of Function in Hemispheres
- Corpus Callosum connects left and right hemisphere
- Left hemisphere = contains Broca’s area for speech (girls)
- Right hemisphere = spatial awareness (boys)
Strengths and Weaknesses of Lateralisation in sex differences
+Harasty found girls better at language tasks
+Evidence supporting uses scientific methods = brain scans
-Rilea found men sometimes do better at language tasks
-Sommer found no strong evidence that girls use both hemispheres for language tasks
What is the CNS?
Brain and spinal cord
Neurotransmitters
Chemicals that are released from neurons to help them pass messages from one cell to another
Synaptic Functioning Passing Messages
1) Electrical impulse triggered inside a cell body of a neuron
2) Neuron passes impulses along the axon towards end of nerve fibre
3) Impulse reaches terminal button
4) Vesicles release neurotransmitter molecules into synapse
5) Molecules are grabbed by receptors on next neuron = passing impulse along
Visual Agnosia
- Brain can’t process what you are seeing
- Unable to recognise: colour, objects and name them, places
Prosopagnosia
Faces can’t be processed by brain
Impact of Damage
Pre-frontal cortex = impulses and controlling emotions, you would be more impulsive and aggressive
Sperry Results
Reading words and selecting objects:
- right visual field could repeat word
- left couldn’t
- left could select object that matched what they had seen
- right couldn’t point to correct object
Objects in hands:
- object felt by right hand, could name it
- held by left hand, couldn’t name it
Sperry Conclusion
- each hemisphere works well without being connected
- each hemisphere has its own memories that cant be shared to the other hemisphere
- left hemisphere better at naming items held in right hand
- right hemisphere better at identifying objects held in left hand