PSYC 355: Chapter 17 Part 2

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  1. What is delayed non-matching-to-sample task? (object recognition memory)
    a test where the subject must respond to the unfamiliar stimulus of a pair. e.g. the monkey has to identify which of two objects was NOT seen previously
  2. What is a cognitive map?
    A mental represntation of a spatial relationship
  3. What is latent learning?
    learning that has taken place but has not yet been demonstrated by performance
  4. what is a place cell?
    a neuron in the hippocampus that fires when the animal is in a particular location
  5. what is a grid cell?
    a entorhinal neuron that fires when an animal crosses intersection points of an abstract grid map of the local environment. e.g. the innate system of latitude and longitude
  6. What is a border cell?
    a entorhinal neuron that fires when the animal arrives at the perimeter of the local spatial cognitive map.
  7. What is neuroplasticity?
    the ability of the nervous system to change in response to experience or the environment.
  8. What is cell assembly?
    a large group of cells that tend to be active at the sametime because they have been activated in simultaneously in the past.
  9. What is a Hebbian synapse?
    a synapse that is strengthened when it successfully drives the post synaptic cell
  10. What is a standard condition (SC)?
    the usual environment for lab rodents, with a few animals in a cage and food and water.
  11. Whats the impoverished condition for rats?
    lab rodents housed singly in a small cage without complex stimuli
  12. What is the enriched condition for rats?
    a condition in which lab rodents are housed with other rats and lots of stimulus objects
  13. What is tetanus?
    an intense volley of action potentials
  14. What is long term potentiation (LTP)?
    a stable increase in the effectiveness of synapses following strong stimulation
  15. What is the hippocampus?
    a medial temporal lobe structure important in learning and memory
  16. What is the dentate gyrus?
    a strip of gray matter in the hippocampal formation
  17. What is the subiculum?
    adjacent to the hippocampus, contributes to hippocampal formation
  18. What is an NDMA receptor?
    a glutamate receptor. binds the NDMA agonist. ligand and voltage gated.
  19. Whats an AMPA receptor?
    glutamate receptor, binds the glutamate agonist AMPA
  20. What is protein kinase?
    an enzyme that adds phosphate groups to protein molecules.
  21. What is CREB (cAMP responsive element binding protein)?
    a protein activated by cyclic AMP (cAMP) that now binds to the promotor region of genes involved in neural plasticity.
  22. What is a retrograde messenger?
    transmitter that is released by the postsynaptic region, travels back across the synapse and alters the functioning of the presynaptic neuron
  23. What is a conditional knockout?
    a gene that can be selectively deactivated in adulthood in specific tissues
  24. What are nootropics?
    a class of drugs enhancing cognitive function
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PSYC 355: Chapter 17 Part 2
2012-04-13 22:57:24

Chapter 17: Learning and Memory Part 2
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