hard · GMAT Verbal
Some memory researchers reject the standard stage-based account of consolidation. Under the 'sleep spindle' theory, it is the specific neural oscillations (spindles) that occur during transitions between sleep stages, rather than the broad sleep stages themselves, that are the critical factor in memory consolidation.
Which of the following conclusions about memory consolidation would a researcher who endorses the sleep-spindle theory most likely accept?
- The amygdala is the primary driver of essentially all memory consolidation.
- REM sleep is the sole stage in which any effective memory transfer can occur.
- Disrupting the specific neural oscillations would impair memory even if the total duration of each sleep stage remained unchanged.
- Lengthening total sleep time reliably improves consolidation regardless of spindle activity.
- Declarative and procedural memories can never be consolidated during the same night of sleep.
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