Here’s an interesting new study on cognitive effects of the amount of sleep one gets.
The interesting things from the study:
[li]They found an optimum range of sleep time (7-8 hours) and that both less sleep and more sleep affects cognition[/li]
[li]Short term memory did not track with the amount of sleep.[/li]
[li]The optimum amount of sleep didn’t see to be age dependent.[/li]
[li]The effect on cognition doesn’t seem to be long term. Sleeping longer the night before (compared to the average sleep time over the prior month) raised cognition scores.[/li][/ul]
Personally, I know I don’t get enough sleep. My nominal bed-time to wake-time is 7 hours, but factoring in falling asleep, waking up early, and waking during the night, I figure I’m getting less than 6 hours. I definitely feel it during the week. I have longer periods of low energy, but never really thought about whether my cognitive abilities might be diminished. I can also anecdotally confirm that, in my case, if I sleep more than about 9 hours, I feel “off” for most of the day.
I think there is something to this study, but then again, my reasoning’s probably a little impaired.
I don’t know what I can do about it. I’ve fashioned my sleep regimen primarily around the teachings of Dr. Warren Zevon: