Detay bilgiSoru #10403
Sleep and Memory Consolidation
Memory consolidation is an intricate neurobiological process through which temporary, labile memory traces are converted into enduring, long-term representations. Neuroscientists have established that sleep plays an indispensable role in this stabilization. During wakefulness, the hippocampus rapidly encodes novel experiential data and factual knowledge. However, the hippocampus possesses limited storage capacity. During non-rapid eye movement (NREM) slow-wave sleep, sharp-wave ripples in the hippocampus repeatedly replay recently acquired neural firing patterns. This replay coordinates with slow oscillations in the neocortex, gradually transferring synaptic information from the temporary hippocampal repository to permanent neocortical storage networks. Meanwhile, rapid eye movement (REM) sleep appears to facilitate emotional memory regulation and associative creative thinking by pruning redundant synaptic connections. Consequently, chronic sleep deprivation not only impairs immediate attention and vigilance but also substantially impedes the long-term retention of acquired knowledge. According to the text, what happens during NREM slow-wave sleep?
- A)The hippocampus permanently replaces the neocortex as the primary long-term memory vault
- B)The brain completely shuts down all metabolic activities to recharge energy reserves
- C)Emotional memories are permanently erased to prevent psychiatric stress
- D)Synaptic connections between neurons are completely severed throughout the cortex
- E)Neural firing patterns are replayed to transfer information from the hippocampus to neocortical networks
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Doğru cevap: E) Neural firing patterns are replayed to transfer information from the hippocampus to neocortical networks
Çözüm: Paragrafta "sharp-wave ripples in the hippocampus repeatedly replay recently acquired neural firing patterns... transferring synaptic information from the temporary hippocampal repository to permanent neocortical storage networks" açıkça belirtilmiştir. Doğru cevap E'dir.