Intelligence, Personality, and Morality Flashcards
What area is crucial for intelligence, personality, and morality?
Frontal lobe (with participating others)
Silent Lobes
Frontal Lobes, known recently as quiet and hard to link to any function
Three divisions of the frontal lobe
Prefrontal lobe
Premotor cortex
Motor cortex
Which division of the frontal lobe is concerned with intelligence, personality, and morality?
Prefrontal
Three ways to define prefrontal cortex
- non-motor areas
- granular frontal cortex (layer 4 for thalamic input)
- Projection zone of the dorsal medial nucleus of the thalamus: important for intercommunication selective attention
5 regions of the prefrontal lobes
- lateral (side)
- medial (midline)
- dorsal (top)
- ventral (bottom)
- orbitofrontal (ventromedial but behind the eyes)
DLPFC receives what inputs
where, dorsal
VLPFC
when, ventral
Fluid intelligence
Problem solving
Crystalized Intelligence
Accumulated knowledge
Imaging suggests what about intelligence?
It is connected to size of, activity within, and efficiency of various neural networks
Blue prefrontal network
task-positive: problem solving, fluid intelligence, controlling actions
dorsolateral prefrontal cortex
posterior pariteal cortex
dorso anterior cingulate cortex
Purple prefrontal networks
default mode: social cognition, emotional self-awareness, and moral choice making
dorsomedial prefrontal cortex
ventromedial prefrontal cortex
hippocampus & posterior cingulate cortex
What is the relation between IQ and prefrontal networks?
Anti-correlation in use: either one of the other means higher IQ
Dorsolateral prefrontal cortex/DLPFC
blue, task-positive
* forms plans of action
* stores short-term memory
* directs top-down attention
Posterior pariteal cortex/PPC
Blue, task-positive
* bottom-up attention controller
Dorso anterior cingulate cortex/dACC
Blue, task-positive
* activity monitor, flags errors
Two experiments for task-positive
- Wisconsin Card Sorting: not told how to organize but told when right or wrong
- Stroop test: subjects are asked to
name the ink color that color words are printed in when the ink color and word meaning are the same or conflict
Dorsomedial prefrontal cortex/DMPFC
default mode
theory of mind
Ventromedial prefrontal cortex
default mode
w/ amygdala: emotional control
w/ temporal parietal junction: morality
Hippocampus & posterior cingulate cortex
default mode
papez circuit: episodic memory
How is personality reflected in the brain?
Some of certain areas
Temporal parietal junction/TPJ
Intuitive moral judgements
What may be the basis of empathy?
TPJ mirror neurons
DLPFC syndrome
loss of fluid intelligence
apathy
OFC syndrome
emotional swings
egocentric, antisocial
lack of empathy
