<p>Wikipedia has some good information on this issue. Search for:</p>

<p>Effects of sleep deprivation on cognitive performance</p>

<p>In summary, 'yes', sleep deprivation can have a multitude of negative consequences on your cognitive abilities, like weakening your ability to handle complex cognitive tasks.</p>

CC BY-SA 3.0
2017-10-18T21:34:29.410Z
More precisely there's [an entire Wikipedia article](https://en.wikipedia.org/wiki/Effects_of_sleep_deprivation_on_cognitive_performance) on the topi. The search prhase is also good on google, first hit for me is this review article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2656292/
got trolled too much this week
CC BY-SA 3.0
2017-10-17T22:31:34.633Z
2017-10-17T22:31:34.633Z
tale852150
<p>What are the consequences of chronic lack of sleep? For example, insomniacs are known to sleep less than normal sleeping individuals. </p>

<p>I am wondering if there are any long term cognitive impairments from reducing sleep time to, say 4h instead of the normally recommended 8 hours in the long run, say for a year or so?</p>

CC BY-SA 3.0
2017-10-18T09:02:52.470Z
[The websites I link to in my more specific question](https://cogsci.stackexchange.com/q/868/21) mentions a couple of cognitive impairments, and I also list articles which state how some of them are overcome in the short term. Perhaps these sources can help you formulating a better sourced, well-defined, question? Specifically, _"attention-dependent neural processes do not normalize after this period of time in habitually short sleeping individuals and may require longer recovery periods"_.
Steven Jeuris
<sleep><brain-development><brain>
Are there any long term cognitive impairments from prolonged period reduced sleep?
Tobi Alafin
# Are there any long term cognitive impairments from prolonged period reduced sleep?

(Asked by: username_0 on 2017-10-17)

What are the consequences of chronic lack of sleep? For example, insomniacs are known to sleep less than normal sleeping individuals.

I am wondering if there are any long term cognitive impairments from reducing sleep time to, say 4h instead of the normally recommended 8 hours in the long run, say for a year or so?

**Tags:** sleep, brain-development, brain

> **Comments:**
> **username_1**: [The websites I link to in my more specific question](https://cogsci.stackexchange.com/q/868/21) mentions a couple of cognitive impairments, and I also list articles which state how some of them are overcome in the short term. Perhaps these sources can help you formulating a better sourced, well-defined, question? Specifically, _"attention-dependent neural processes do not normalize after this period of time in habitually short sleeping individuals and may require longer recovery periods"_.  

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## 1 answers

### Answer by username_2 on 2017-10-17. Score: 1

Wikipedia has some good information on this issue. Search for:

Effects of sleep deprivation on cognitive performance

In summary, 'yes', sleep deprivation can have a multitude of negative consequences on your cognitive abilities, like weakening your ability to handle complex cognitive tasks.

> **Comments:**
> **username_3**: More precisely there's [an entire Wikipedia article](https://en.wikipedia.org/wiki/Effects_of_sleep_deprivation_on_cognitive_performance) on the topi. The search prhase is also good on google, first hit for me is this review article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2656292/  

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