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29 Cards in this Set

  • Front
  • Back
three parts of Posner's Trinity of Attention
1. Alerting
2. Orienting
3. Executive Control
-preparedness, increase and maintain response readiness
-sustained attention, vigilance, alertness
Alerting
parts of brain involved in alerting?
thalamus, frontal lobe, parietal lobe
-focus - select information from multiple stimuli
-selection, scanning
-part of the brain?
orienting
-parietal lobe
-consciousness - resolution of conflict
-part of the brain?
executive control
-anterior cingulate cortex
-longer reaction time to name colors when the color of the word does not match the color written
Stroop Effect
-3 types of attention
1. selective attention - salient or relevant
2. divided attention - more than one stimulus
3. sustained attention - attention span
variations of the attentional challenge
1. shortening of port illumination
2. varying the duration of rady period
3. introducing distractors
bottom-up attention
-stimulus driven - sensory
top down attention
-goal directed - voluntary
controls of attention in which parts of the brain?
1. control
2. amplification
3. expression
1. frontal cortex
2. thalamus
3. expression
a hypothetical change in neural tissue postulated in order to account for persistence of memory, the "memory"
engram
-information about HM
Henry Gustav Molaison
-removed the hippocampus to reduce the number of seizures
-lost long term memory formation
-removal of tissue was bilateral
-amnesia involving no new long term memories
anterograde amnesia
-amnesia involving loss of previously formed memories
retrograde
-only limited within HM
- a subject sees an object and must later choose the object that matches
delayed matching to sample tasks
- a subject sees an object that is different than the sample
delayed non matching to sample tasks
impaired areas of memory for HM
-"knowing that"
-"memory with record"
-explicit memory
-declarative memory
intact areas of memory for HM
-"knowing how"
-"memory without record"
-implicit memory
-procedural learning
-the ability to state a memory in words
declarative memory
-the development of motor skills and habits
procedural memory
-ability to recall single events
episodic memory
types of nondeclarative memory
procedural memory, classical conditioning, non associative: habituation, sensitization
-brain structure important for the conversion of short term memories into long term memories (explicit)
hippocampus
-test of spatial memory
-rats are tested to find platform in murky water
-rats with hippocampal damage struggle to locate the platform
Morris Water Maze
-after the same amount of trials, rats with HP lesions take longer to find platform than control rats
radial maze
mice with damage to the hippocampus often enter a correct arm twice - trouble with spatial memory
-forget which arms they have already tried
place fields of 4 cells in the hippocampus
hippocampal place cell -
-location specific
-develop within minutes and are stable for weeks to months
-same cell can have stable representations of different places within different environments
place cell properties
types of cells
-border cells, grid cells, head direction cells