Brain-derived neurotrophic factor (BDNF), a key protein involved in the formation of memories, is stimulated by

• A. continued everyday learning.
• B. narcotics.
• C. sleep.
• D. the amygdala.

Answer: (A)

Verified step by step guidance

1. Understand the role of Brain-derived neurotrophic factor (BDNF) in the brain. BDNF is a protein that supports the survival of existing neurons and encourages the growth and differentiation of new neurons and synapses. It is crucial for long-term memory formation.
2. Consider the options provided: continued everyday learning, narcotics, sleep, and the amygdala. Each of these has different effects on brain function and BDNF levels.
3. Evaluate the impact of continued everyday learning on BDNF. Learning and engaging in new activities can stimulate the production of BDNF, as it is associated with neuroplasticity and the strengthening of synaptic connections.
4. Analyze the effect of narcotics on BDNF. Narcotics can have a negative impact on brain health and may reduce BDNF levels, impairing cognitive functions and memory.
5. Consider the role of sleep and the amygdala. While sleep is important for memory consolidation, it is not directly responsible for stimulating BDNF. The amygdala is involved in emotional processing but does not directly stimulate BDNF production.