Which part of the brain is responsible for consolidating memories while we sleep?

Question

BlackTom AI · Accepted Answer

Memory consolidation during sleep is a process that's been studied extensively, and several brain regions are involved in memory, each with different roles.
Option 1: Hippocampus. This structure is deeply tied to the encoding and consolidation of episodic memories, and during sleep it participates in replay and communication with the cortex to strengthen memory traces. This makes it the best fit for the question about consolidation during sleep.
Option 2: Cerebral cortex. While the cortex stores long-term memories and integrates information across experiences, the core consolidation process during sleep is primarily supported by hippocampal activity reactivating memories so they can be redistributed and stabilized in cortical networks. So, the cortex isn't the primary consolidation driver during sleep, even though it ultimately houses memory representations.
Option 3: Basal ganglia. The basal ganglia are more closely associated with procedural memory and motor learning, such as habit formation and skill execution. They are not the main center for sleep-related consolidation of declarative memories, which is why this option is not the best match for the stated question.
Option 4: Cerebellum. The cerebellum plays a crucial role in coordinating movement and some forms of motor learning, but it is not the primary site implicated in declarative memory consolidation during sleep. Its contributions are more about motor control and timing rather than consolidating memories during sleep.

APPSYCH141-034 Section 14 Quiz: Memory

Which part of the brain is responsible for consolidating memories while we sleep?

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