5 ms·

This is interesting. "When the deviant tone is played to the left ear, its output is predominantly relayed to the right cortical hemisphere, which shows the ch

This is interesting. "When the deviant tone is played to the left ear, its output is predominantly relayed to the right cortical hemisphere, which shows the characteristic vigilance response." "During the first night, the left hemisphere had a more pronounced vigilance response to these deviant tones as compared with the right hemisphere." I wonder if there is something to find out with regard to sleeping position. Do we sleep on our right side to cover the right ear for less disturbed sleep? Or rather on the left, to not cover the right ear if we feel the environment is not safe? Is the preference for the right ear maybe related to the preference for right-handedness in humans? Lying on the left side would leave both the right ('more vigilant') ear and the stronger arm and hand unconstrained, the latter maybe needed for sudden defense? Just a few thoughts, pick them apart.

meowface 6y ago
Interesting ideas. This also makes me wonder if the study considered potential differences in left-handed and right-handed participants. (Can't currently find a free copy of the paper.) Maybe there's a chance that the left hemisphere could be the more vigilant one for right-handed people and the right hemisphere could be the more vigilant one for left-handed people.
- wombatmobile 6y ago
  This 2007 study, whilst not specifically investigating FNE, found handedness in rats is reflected in specific, regional EEG asymmetry during sleep. Handedness leads to interhemispheric EEG asymmetry during sleep in the rat V V Vyazovskiy, I Tobler https://pubmed.ncbi.nlm.nih.gov/18077659/ https://pubmed.ncbi.nlm.nih.gov/18077659/
- _Microft 6y ago
  There is a link to the paper "Night Watch in One Brain Hemisphere during Sleep Associated with the First-Night Effect in Humans" below the article. [PDF] https://www.cell.com/current-biology/pdfExtended/S0960-9822(16)30174-9 https://www.cell.com/current-biology/pdfExtended/S0960-9822(... -- DOI:10.1016/j.cub.2016.02.063
  - meowface 6y ago
    My bad, missed the link due to scrolling on phone and thinking I hit the end. >All subjects were right-handed. Looks like they weren't able to factor it in.

meowface 6y ago

Interesting ideas. This also makes me wonder if the study considered potential differences in left-handed and right-handed participants. (Can't currently find a free copy of the paper.) Maybe there's a chance that the left hemisphere could be the more vigilant one for right-handed people and the right hemisphere could be the more vigilant one for left-handed people.

wombatmobile 6y ago
This 2007 study, whilst not specifically investigating FNE, found handedness in rats is reflected in specific, regional EEG asymmetry during sleep. Handedness leads to interhemispheric EEG asymmetry during sleep in the rat V V Vyazovskiy, I Tobler https://pubmed.ncbi.nlm.nih.gov/18077659/ https://pubmed.ncbi.nlm.nih.gov/18077659/
_Microft 6y ago
There is a link to the paper "Night Watch in One Brain Hemisphere during Sleep Associated with the First-Night Effect in Humans" below the article. [PDF] https://www.cell.com/current-biology/pdfExtended/S0960-9822(16)30174-9 https://www.cell.com/current-biology/pdfExtended/S0960-9822(... -- DOI:10.1016/j.cub.2016.02.063
- meowface 6y ago
  My bad, missed the link due to scrolling on phone and thinking I hit the end. >All subjects were right-handed. Looks like they weren't able to factor it in.