Showing posts with label sleep. Show all posts
Showing posts with label sleep. Show all posts
Monday, August 26, 2024

The brain simulates actions and their consequences during REM sleep

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During REM sleep our brains make up and work though simulated scenarios, while putting our bodies into paralysis so we don't thrash abou...
Wednesday, April 03, 2024

Neurons help flush waste out of our brains during sleep

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More information ( summarized here ) on what is happening in our brains while we sleep is provided by Jiang-Xie et al. ,, who show that acti...
Monday, April 01, 2024

When memories get complex, sleep comes to their rescue

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Here I point to a PNAS article by Lutz et al. and a commentary on the work by Schechtman. Here is the Lutz. et al. abstract: Significance R...
Friday, April 14, 2023

Breath - Some basic facts and instructions

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I’ve enjoyed reading through James Nestor’s book “ Breath - The new science of a lost art, ”  and I tried out some of the exercises he point...
1 comment:
Monday, January 30, 2023

How sleep shapes what we remember and forget.

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I have found monitoring the quality of my sleep to be a fascinating and useful activity. I use both the Oura ring and Apple watch to monit...
Friday, November 11, 2022

Sleep preferentially consolidates negative aspects of human emotional memory

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The Nov. 1, 2022 issue of PNAS has a special feature on Sleep, Brain, and Cognition. A large body of research suggests that sleep benefits ...
Friday, September 09, 2022

Eye movements are related to the contents of consciousness in REM (rapid eye movment) sleep

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Senzai and Scanziani have recorded head direction cells in the anterior dorsal nucleus of the thalamus in mice during wake and sleep. The di...
Wednesday, July 20, 2022

Widespread ripples synchronize human cortical activity during sleep, waking, and memory recall

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I pass on the summaries of work by Dickey et al. :   Significance Different elements of a memory, or any mental event, are encoded in loca...
Wednesday, April 13, 2022

The Dance of Sleep

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Sleep and wakefulness are characterized by unique intrinsic activity patterns and are usually thought to be two distinct global states, with...
Friday, April 01, 2022

Losing sleep with age.

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Jacobson and Hoyer summarize experiments of Li et al. : Humans spend approximately one-third of their lives asleep, but this is not distri...
Monday, March 14, 2022

Addicted to dreaming.

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Dopamine (DA) is usually associated with pleasure and addiction. Now Hasegawa et al. show that release of DA in the basolateral amygdala (B...
Friday, October 08, 2021

Reconsolidation of a reactivated memory can be altered by stress hormone levels.

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Stern's summary in Science Magazine of work by Antypa et al. : Reactivation of a memory can make it malleable to subsequent change dur...
1 comment:
Tuesday, February 23, 2021

Real-time talking with dreamers during REM sleep

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A fascinating new window for reserach on dreaming has been opened by four collaborating but independent laboratory groups. The summary of t...
Thursday, February 04, 2021

Moonstruck sleep: Synchronization of human sleep with the moon cycle

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From Casiraghi et al. : Before the availability of artificial light, moonlight was the only source of light sufficient to stimulate nightti...
Tuesday, February 02, 2021

A brief afternoon nap is probably good for your brain.

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On some days I feel midafternoon drowsyness that makes it difficult for me to think or write. I lie down and do "a 10 minute naplet.&qu...
1 comment:
Thursday, January 28, 2021

Why do our brains dream?

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I want to point to a review by Nick Romeo of Zadra and Stickgold's new book " When Brains Dream ". The review summarizes impo...
Thursday, August 20, 2020

Effects of lockdown on human sleep and chronotype during the COVID-19 pandemic

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An open source article in Current Biology from Leone et al ., the summary: The COVID-19 pandemic resulted in many countries imposing a lock...
Tuesday, April 07, 2020

The perils of nighttime dining

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Kelly et al. show that lipids in late evening snacks are less likely to be oxidized and most likely to be stored as fats than lipids in mor...
Friday, November 22, 2019

Evidence for premature aging caused by insufficient sleep.

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I have come to realize in the past year or so that my physical and mental robustness require getting at least seven, and preferably eight, h...
Wednesday, November 13, 2019

New work on how and why we sleep.

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The fact that I'm finding the quality of my sleep to be central to my robustness and well-being makes me want to pass on descriptions of...