4 ms·
Possible. Or it could just be light as a confounding signal -- they get energy from it, after all, and animals with brains and eyes will spend energy more effic
by jldugger 9y ago
Possible. Or it could just be light as a confounding signal -- they get energy from it, after all, and animals with brains and eyes will spend energy more efficiently during the day.
A much older article on jellyfish sleep suggests this proposed advantage, at least: https://search.proquest.com/openview/c958b584511e462a64623c59b7a6bd0a/1?pq-origsite=gscholar&cbl=40810 https://search.proquest.com/openview/c958b584511e462a64623c5...
- meri_dian 9y agoWell I was thinking that light could impact the availability of their food source and so what the researchers interpret as sleep is just some other form of energy conservation, but the 'groggy' behavior of the jellyfish in their one experiment made me think that their energy conserving state does involve their neurons and so at that point it's hard to distinguish energy conservation from sleep.
- Obi_Juan_Kenobi 9y agoThe three criteria mentioned are designed specifically to avoid confusion with general metabolic factors like you suggest.