PSYA01H3 Lecture Notes - Lecture 10: Prefrontal Cortex, Frontal Lobe, Sensory Neuron
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• Frontal Lobotomy: Surgical severance of nerve fibers connecting the frontal lobes to the
thalamus that has been performed especially formerly chiefly to treat mental illness.
o Advantages: Severs connections disconnecting memories and future concerns.
o Disadvantages: emotional flatness, inability to plan, indifference to the opinions
of others, no desire for simulation, etc.
• Pre-frontal Cortex:
o Damage to the pre-frontal cortex:
▪ Slowing of thoughts and loss of spontaneity
▪ Perseveration errors
• Tested through the card sorting experiment.
• Tests one’s ability to adapt to a changing environment.
▪ Loss of self-awareness and having a flat affect
▪ Deficiencies in foresight and planning
▪ Tendency to confabulate
• Pre-motor Cortex: An area of motor cortex lying within the frontal lobe of the brain just
anterior to the primary motor cortex.
o Sensory strip: Receives input from the external world.
o Motors strip: Produces output on the external world.
▪ Phantom limb pain: The sensations felt in an absent limb in an individual.
• The brain devotes more area for regions of the body with more
sensory neuron input.
• Hippocampus: The region of the brain which takes current stimuli and information and
stores it for future reference.
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