Research in the area of
sleep has truly grown in recent years, and we have so many more insights into
the effect of sleep on human functioning such as motor vehicle operation or
simple daytime sleepiness. "Catastrophes, Sleep, and Public Policy:
Consensus Report" by Mitler, Carskadon, Czeisler, Dement, Dinges, and Graeber
compiles the findings from several previous studies conducted by these authors.
Tests previously used include the Multiple Sleep Latency Test, and the
Maintenance of Wakefulness Test. Frequency of naps and the time periods
of sleep stages were also previously considered. The authors cite an
impactful discovery in the finding that the neural processes controlling
alertness and sleep create an increased sleep tendency and decreased ability to
properly function early in the morning, as well as during the afternoon 'slump'
we all feel between roughly 2 pm and 5 pm, although the latter occurrence is to
a notably lesser degree. I note that the effects of sleep loss are in
cumulative, continuously increasing the risk of an error from sudden extreme
sleepiness with accumulated sleep debt. Physical activity and dietary
stimulants (i.e. caffeine) only work for so long ... during long enough periods
of sustained stillness while sleep-deprived, we get overwhelmingly sleepy and
easily fall asleep.

I already mentioned in
one of my previous blogs that my cousin, a while ago, but not too far removed
from memory, was in a bad fatigue-related car accident. She crashed around
5 am, during a roughly 5-hour drive, towards the end of her commute. She
was alone on this trip. Again, she survived, somehow without injury, but
she was very shaken up -- as was I and the rest of our family. She
totaled her car. She was not superhuman, immune to the effects of sleep
deprivation, and neither am I.
The article humbly noted
that a direct correlation between human responses and incident errors from
lowered alertness, delayed reaction, or inattention cannot be shown.
However, there is enough data to actually suggest that the effect cannot
be zero, or that an effect of 0 is unlikely to say the least. Sleep and
related factors are no doubt involved in a myriad of history's disasters.
With this knowledge, the author committee of this article created a list
of recommendations to readers including but not limited to: (1) encouraging
policy makers in organized labor, management, and government to monitor the
effects of sleep physiology on performance, (2) creating programs that identify
signs of sleep-related error, (3) being cognizant of time zones for vulnerable
performance, (4) implementing adaptive work shifts focused on promoting
sufficient and healthy sleep so as to promote safety in the workplace with
minimal expense and (5) pursuing more research into the area of human function
as it relates to sleep health.
I had 2 lacrosse games
yesterday, on about 6.5 hours of sleep. I also had to drive an hour to
the location of both of my games. When I arrived, I felt sleepy and
"slow." As soon as we started running, my alertness increased
but I can't help but think this adjustment would not have been needed with a
proper amount of sleep. I cannot help but think that the couple of times
I got beat on defense, my slow reactions were attributed to lack of sleep.
I have definitely noticed proportionally slower cognitive ability with
less sleep. So maybe the myth of the all-nighter study session should be
busted? I would definitely love to see more research conducted with
sleep-deprived college students on functional ability. College students
need to be better educated on the effects of sleep deprivation, including
myself. College students would benefit from more exposure to information
on the combined effects of alcohol, caffeine, and sleep-deprivation. We
would benefit from more exposure to information simply on how to sleep more,
study less, and use time wisely. I would enjoy pursuing this area of
research myself.
I'm so thankful your cousin is okay! Sleepiness-related car accidents are so scary. As I drove home from serving 10 weeks at a summer camp, I remember my parents encouraging me to pull over and take a nap if I felt tired. On the trip, I definitely was exhausted from weeks of partial sleep deprivation. What interests me is how easily my mind thinks, "I can drive 20 more minutes. I'm not THAT tired." But then I realize... okay this is getting dangerous. I'm need to switch drivers with someone else in the car. Also, I've heard that many car accidents happen within 30 minutes of home. That makes sense to me because the driver thinks, "I'm almost there, I can make it." In reality, it's far more wise to just pull over. Like you said, we're not superhuman.
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