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from the swallow-this-hook-line-and-sinker dept.
Was that fish on your plate once a sentient being? Scientists have long believed that the animals aren't capable of the same type of conscious thought we are because they fail the "emotional fever" test. When researchers expose birds, mammals (including humans), and at least one species of lizard to new environments, they experience a slight rise in body temperature of 1°C to 2°C that lasts a while; it's a true fever, as if they were responding to an infection. The fever is linked to the emotions because it's triggered by an outside stimulus, yet produces behavioral and physiological changes that can be observed. Some scientists argue that these only occur in animals with sophisticated brains that sense and are conscious of what's happening to them. Previous tests suggested that toads and fish don't respond this way.
Now, a new experiment that gave the fish more choices shows the opposite. Researchers took 72 zebrafish and either did nothing with them or placed them alone in a small net hanging inside a chamber in their tank with water of about 27°C; zebrafish prefer water of about 28°C. After 15 minutes in the net, the team released the confined fish. They could then freely swim among the tank's five other chambers, each heated to a different temperature along a gradient from 17.92°C to 35°C. (The previous study used a similar setup but gave goldfish a choice between only two chambers, both at higher temperatures.) The stressed fish spent more time—between 4 and 8 hours—in the warmer waters than did the control fish, and raised their body temperatures about 2°C to 4°C, showing an emotional fever, the scientists report online today in the Proceedings of the Royal Society B. Thus, their study upends a key argument against consciousness in fish, they say.
(Score: 3, Funny) by mhajicek on Friday November 27 2015, @10:32PM
"And some single celled creatures have rather sophisticated responses too"
You're not talking about Ethanol Fueled are you?
Actually I can't even prove to myself that I'm truely conscious. I could be a static record of sequential brain states which includes the state of believing itself to be conscious. Simplify that, and you could have "flag_conscious = 1" as an entity.
The spacelike surfaces of time foliations can have a cusp at the surface of discontinuity. - P. Hajicek
(Score: 2) by mcgrew on Friday November 27 2015, @11:16PM
I wrote a story about a sentient robot, and he had no fear or any other emotion. I'll post it here when the magazines have all finished rejecting it.
mcgrewbooks.com mcgrew.info nooze.org
(Score: 2) by TheLink on Saturday November 28 2015, @06:31AM
Actually I can't even prove to myself that I'm truely conscious. I could be a static record of sequential brain states which includes the state of believing itself to be conscious.
You can prove to yourself that you experience the consciousness phenomena. In fact that's the only thing you can prove 100% to yourself.
Whether you have free will is a different issue.
So either you misunderstand or you don't actually experience consciousness.
(Score: 2) by mhajicek on Saturday November 28 2015, @06:51PM
It appears that I experience consciousness, but I acknowledge that it may be an illusion.
The spacelike surfaces of time foliations can have a cusp at the surface of discontinuity. - P. Hajicek
(Score: 2) by TheLink on Sunday November 29 2015, @07:55PM
Perhaps you're really one of those who don't actually experience consciousness, just emulating it imperfectly? ;)