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Neural Basis of Cognition (Capgras Syndrome (Studied using brain imaging…
Neural Basis of Cognition
Capgras Syndrome
No emotional response to loved ones
Assume others impostors
Studied using brain imaging
Use findings to understand brain
Capgras - damage to amygdala
Reveals many parts of brain needed for tasks
Frontal lobe
Imagined vs real
less activity in Capgras
Study of the Brain
Use damaged brains to understand functions
3 Major Sections
Hindbrain atop spine
Cerebellum, senses
Midbrain
Movements, senses
Forebrain
Outside part of brain
Subcortical structures
Brain split in half
Connected by fibers (commisures)
Halves not individual, work together
Scans
fMRI, PET see activity
MRI, CT see structure
EEG notes electrical impulses in nerves
Combining methods much more powerful
Cerebral Cortex
Largest part, covers cerebrum
Motor areas
Primary motor and sensory projection areas
Areas with more control get more brain
eg. auditory area for human speech
Contralateral connections
Association cortex
apraxias, affect voluntary action
agnosias, affect identification of objects
Neglect syndrome, ignore half of world
Prefrontal damage impacts strategy
Brain Cells
Neurons
receive/transmit info
use neurotransmitters from synapse to dendrites
Allow ions into postsynaptic cell
If enough ions interred, action (all or none)
Synaptic connection slow but adaptable
Glia
Build nervous system
Feed Neurons
Repair damage
Insulate neurons
Send some info