Cog Neuro Final Flashcards
Orbitofrontal Cortex
Prediction for decision making and rewards
Those with lesions become impatient for Temporal Discounting
More for taste preference
Price (like on wine) impacts perception of how it tastes and OFC tracks this
Also about socially inappropriate behavior
Anterior Cingulate Cortex
Conflict resolution and error detecting. Greater activity for hard or difficult (incongruent trials like in the Stroop task when its the wrong color with the word. but then activation gets less because you are anticipating the incongruency)
Responds to valence for social cognition
Involved in PAIN
Is in the medial frontal cortex
Insula
Disgust
Amygdala
Fear response and social judgement
Low road:
quick, autonomic reactions. fight or flight response. directly from thalamus
High road:
slower but more accurate. higher level judgements. from thalamus, but then to sensory cortex
Lesions create no fear response
Emotional memories are more salient
More active to fearful faces
Hippocampus
Subdivided
Involved with “Recall/recognition”
Binds info from perirhinal and parahippocampus
Parahippocampus
Active for “familiarity”
Scenes and places
Also for context
Perirhinal
Detects novel items
Involved in familiarity
Superior Temporal Sulcus
Joint attention. Driven by eye gaze
- Most active when gaze is MET
IDing non-verbal cues
High sensitivity for speech and language
Medial Temporal Lobe (what is in the region)
Hippocampus
Parahippocampus
Perirhinal cortex
Default Mode Network
The parts of the brain that are active when the brain is at rest: the medial temporal lobe, the medial parietal lobe, the posterior cingulate cortex
Becomes deactivated when doing a task
related to day dreaming
Long Term Potentiation
Things become more stronger with activation
Blocking this impairs memory
Areas important for auditory processing
Inferior temporal gyrus
Medial temporal gyrus
Posterior Cingulate Cortex
Heschl’s gyrus
Posterior Cingulate Cortex
dorsal attention networks
DMN
N400
Semantic violations
Temporal lobe
P600
Syntactic violations (grammatical violations)
Parietal and frontal lobes
Broca’s Aphasia
Broken Speech
Expressive
Wernicke’s Aphasia
Saying word salad
Receptive
Conduction Aphasia
Inability to repeat
Kind of a mix of Broca’s and Wernicke
Medial Prefrontal Cortex
Responds to self description
Theory of mind
differentials between judgements between self and friends
Attentional Blindness
The inability to notice salient features because something else is going on (gorilla video)
Change Blindness
Inability to notice changes because you are thinking about something else
Selective attention
Competition so you have to pick what to attend to. If you attend to something it will take your attention away from something else.
Voluntary Attention
Endogenous
Self motivated
Overt:
Move your attention AND eyes
Cover:
Just move your attention but NOT eyes
Reflexive Attention
Exogenous
Stimulus driven
Attenuation Theory
High res vs low res
When info is needed it’s in high res and when it’s not its in low res but still there
P300
Working memory and conscious access of data and rare stimuli
Attentional Blink
Temporal limitation. The idea that you’re worse on the second visual stimuli because you’re paying attention to the first one
Evidence for late selection
Dorsal Attention Network
Voluntary attention, location, features, objects
Ventral Attention Network
Novelty and salience
Detection
Balint’s Syndrome
Bilateral
Massive visual deficits
Attentional spotlight is SO small