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