Context: One question that is crucial in cognitive neuroscience is how information and mental experiences are coded and represented in the brain. Scientists have gained much knowledge about the neuronal codes from the studies of plasticity, but most of such research has been focused on simple learning in simple neuronal circuits; it is considerably less clear about the neuronal changes involved in more complex examples of memory, particularly declarative memory that requires the storage of facts and events (Byrne 2007). Convergence-divergence zones might be the neural networks where memories are stored and retrieved.

Question: Is it important to know how information is coded in the brain?
Answer: that is crucial

Question: Have researchers learned anything studying plasticity?
Answer: have gained much knowledge

Question: What are the roles of Covergence-divergence zones?
Answer: might be the neural networks where memories are stored and retrieved.

Question: What has most of the research on memories revolved around?
Answer: simple learning in simple neuronal circuits;

Question: Have researchers learned anything studying elasticity?
Answer: Unanswerable

Question: Is it not important to know how information is coded in the brain?
Answer: Unanswerable

Question: What are the roles of Covergence-divergence voids?
Answer: Unanswerable

Question: What has none of the research on memories revolved around?
Answer: Unanswerable

Question: what changes are involved in more simple examples of memory
Answer: Unanswerable