Flashcards
Sem título
Flashcards do conjunto (16)
- 1Hangry:1. Impaires self control - not acting impulsivly takes brain power, when the brain is low on fuel it doesn't have the energy to hold back
2. A mistake your brain makes when unsure why you are feeling off - can attribute to stress and anger - same part of brain - nucleopeptide Y
3. Ancestors - 2Declarative Memory (Long term)Conscious Recall
1. Episodic (remembering): event, place time
2. Semantic (knowing): Facts - 3Non-Declarative Memory (Long Term)1. Priming: facilitated processing
2. Procedural: how to ride a bicycle
3. Conditioning: Reflect responses to new stimuli - 4Environmental EnrichmentBrain grows and changes as consequence of environment.
Suggesting, long-term changes in brain structure occur as a result of experience. - 51. Non-associative learningChanges over time in response to a single repeated stimulus
1) Habituation: decreased response to a repeated stimulus
2) Sensitisation: Prior strong stimulation increases response - 62. Associative learninge.g. classical conditioning
Associativity: conditioning occurs to stimuli that are paired
Specificity: conditioning ONLY occurs to stimuli that are paired - cellular process - 7The synapse as a learning system (LTP) - Hebbian- Occurs when one or more axons bombard a dendrite with stimulation (Tetanus stimulation)
- Leaves synapse potentiated for a period of time and neuron is more responsive.
- Associativity and Specificity as properties of LTP
***specifics in book*** - 8Mechanism of LTPNetworks of neurons store memories in patterns, structural changes at the synapse may be responsible for establishing these networks.
Storing info in the nervous system (can occur in presynaptic or postsynaptic neurons or both)
1. Extensive stimulation of postsynaptic cell
2. Release of a retrograde messenger transmitter - travels back to presynaptic cell
3. Causes physiological changes (specifics in book)
----> Physiological changes at synapse may store info (can include neurotransmitter release or effectiveness of receptors)
------> Demonstrated in rats - details in book. - 9The Complimentary Learning Systems ModelMTL structures: important role in declarative (particularly episodic memory)
Hippocampus: responsible for loss of info (impairing LTM) - 10The Complimentary Learning Systems Model & AmnesiaAmnesia as a problem of consolidation (memory processes) - not transferred into LTM.
- 11The 'RIBOT" gradient (Complimentary Learning Systems Model & Amnesia)More remote memories tend to be spared
- 12The Temporal gradient in Amnesia (Complimentary Learning Systems Model & Amnesia) - 2/5 - remainder of gradients in slidesOlder memories become stories, as they are rehearsed over time they become more semantic like.
Hippocampus: role is time limited, the more consolidated a memory is. The less dependent on the hippocampus it is. - 13Neocortex and the Hippocampus (Complimentary Learning Systems Model)Work together to store memories.
The neocortex is connected to the hippocampus via a small # of neurons and this is reciprocated in the hippocampus.
Repeated reactivation of memory trace slowly establishes connections between cortical neurons.
Eventually hippocampul connections become unneccessary. - 14Hippocampus (Complimentary Learning Systems Model)Structure and fast plasticity good for on-line encoding of events as they happen.
Recurrent connectivity in the hippocampal formation instantiates an "auto-associative" memory system
- more info in book if need. - 15Spare-encoding (Complimentary Learning Systems Model)Avoids memories of similar events becoming mixed up - dentate gyrus and CA3
- 16Neocortex (Complimentary Learning Systems Model)Learns to generalise concepts, principles, facts etc. through the interleaved re-presentation of the same event many times in the context of small changes of synaptic efficacy.
Informações
- Descrição
- FlashCards sobre Sem título, criado por Nikara Dawson em 15-06-2020.
- Criado por
- Nikara Dawson
- Visualizações
- 0
- Avaliação