Functions and theories of sleep

6 important questions on Functions and theories of sleep

Negative consequences sleep

1. cognitive impairment
2. sleep intrusions
3. death

Brain plasticity theory

The role of sleep in learning and memory processes is emphasized

Persuit rotor task

PRocedural learning of fine motor skill tasks is dependent on stage 2 of NREM sleep (different types of learning recuire different types of sleep)
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Mirror trace task

Procedureal learning requiring acquisition of new and complex cognitive skills is dependent on REM sleep

Brain plasticity theories

sleep after learning is time sensitive!! 

sleep typically must occur within 24 hours post learning

sleep prior to learning is also an important factor

sleep learning studies support both consolidation and forgetting theories

Threat simulation theory

Behaviours and physiological traits evolve and are maintained because they are adaptive. 

Dreaming functions to simulate threatening events and allows organisms to practice percieving and avoiding relevant threats

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