Okuma AnlamaSoru #9342
Sleep and Memory Consolidation
For decades, neuroscientists viewed sleep simply as a necessary downtime for physiological recuperation. However, contemporary brain imaging research has revealed that the sleeping brain is engaged in an intensely active and meticulously organized sequence of cognitive maintenance. During slow-wave non-REM sleep, newly formed neural memories initially stored in the fragile and capacity-limited hippocampus are systematically reactivated and transferred to the vast, durable architecture of the neocortex. This intricate biological relay prevents catastrophic memory interference, allowing new experiences to integrate smoothly into established knowledge networks. Furthermore, during rapid-eye-movement (REM) sleep, emotional valences associated with traumatic or distressing memories are effectively dampened through neurochemical shifts, particularly the temporary cessation of noradrenaline. Consequently, sleep deprivation does not merely induce daytime fatigue; it fundamentally compromises memory retention, emotional equilibrium, and cognitive plasticity. According to the passage, the primary function of slow-wave sleep regarding memory is ----.
- A)to erase all short-term memories from the hippocampus to prepare for new data
- B)to transfer recently acquired memories from the hippocampus to the neocortex
- C)to stimulate the production of noradrenaline throughout the prefrontal cortex
- D)to permanently block new experiences from integrating with past knowledge
- E)to induce physiological downtime and halt all cellular neural activity
Cevabı ve çözümü göster
Doğru cevap: B) to transfer recently acquired memories from the hippocampus to the neocortex
Çözüm: Metinde "memories initially stored in the fragile and capacity-limited hippocampus are systematically reactivated and transferred to the vast, durable architecture of the neocortex" açıkça belirtilmiştir. Doğru cevap B'dir.