Biology of Learning and Memory

Which of the following processes is fundamental for the formation of long-term memory?

• Decrease in neurotransmission

• Phosphorylation of the PKA protein

• Reduction of gene expression

• Degeneration of synapses

Which brain structure plays a crucial role in the formation of emotional memories?

• Cerebellum

• Basal ganglia

• Amygdala

• Prefrontal cortex

Synaptic plasticity refers to:

• The ability of neurons to generate new neurotransmitters

• The programmed death of neurons

• The formation of new neurons

• The ability of synapses to strengthen or weaken

Which of the following factors influences memory consolidation?

• The intensity of the initial stimulation

• The repetition of learning

• The context in which retrieval occurs

• All of the above

What role does serotonin play in the process of sensitization?

• It inhibits the release of other neurotransmitters

• It activates an intracellular signaling cascade

• It causes the death of neurons

• It blocks postsynaptic receptors

The transcription factor CREB is essential for:

• The synthesis of new neurotransmitters

• The activation of genes involved in memory formation

• The inhibition of synaptic plasticity

• The degradation of synaptic proteins

What happens at the synapses during the learning process?

• Decrease in the number of receptors

• Reduction in the release of neurotransmitters

• Increase in synaptic efficacy

• Degeneration of dendritic spines

Studies of visual deprivation in newborn kittens demonstrated that:

• The visual system is immutable after birth

• Early experience can modify brain structure

• Brain plasticity only occurs in childhood

• Sensory deprivation does not affect brain development

Which of the following best describes the role of the hippocampus in memory?

• Long-term storage of procedural memories

• Consolidation of long-term memory

• Working memory and planning

• Control of automatic movements

Forgetting can be explained by:

• Only the lack of use of synaptic connections

• Neurogenesis in certain brain regions

• The desensitization of synapses

• All of the above