Decision-Making Flashcards
Executive functions - 5 of them
Identifying goals:
- assigning value to diff choices
- keeping main goal in mind while working toward sub-goals, understanding context; the rules necessary to achieve goals
- planning for the future; imagining future scenarios
Inhibiting inappropriate bahviors
Changing strategies
Assigning value to different choices
Working memory
Prefrontal cortex
Central to executive function
Dorsal - lateral regions of PFC “Cold” functions
Solving a math problem
Ventral - medial regions “Hot”
regulating social behavior
Cognitive control
Humans can override stimulus responses if context is inappropriate, e.g driving on different side of road
Will-power “top-down”
Can put off short term desires in pursuit of long-range goals
The stroop test
Color of word and name of word
Red in blue, green in yellow
Will-power shown
FRONTAL LOBES LIGHT UP
Miller and Cohen Model of PFC and cognitive control
Connections between green and saying word green is stronger then saying red when color is green
Executive control provides a bias to non-preferred pathway
The default mode network
Active when mind is turned inward
Involved in thoughts about self, episodic memory, social cognition and mind wandering
Initial state vs task-state, some brain regions decrease activity when person stops day-dreaming and stats preforming task
medial parts of frontal lobes and medial part of parietal lobe and lateral surface of parietal lobe, angular gyrus
What are key regions of default network
Medial PFC
Medial parietal lob
Angular gyrus
Lateral frontoparietal netwrok
Suprammarginal gyrus
Lateral prefrontal cortex
Dorsal attention network
Intraparietal sulcus
Front eye field: saccadic eye movements
Interaction b/w attention network and control network
Attention: pay attention to color of font
Control: Say color of font
Salience network monitors internal and external sensory input and initiates the switch b/w default mode and control/attention networks
Anterior cingulate cortex and Anterior insula
Ventromedial prefrontal cortex
Connects visceral responses and emotions to decision-making
Phineas Gage
Ventromedial prefrontal cortex includes…
Orbitofrontal cortex AND
Anterior cingulate cortex
