It's my understanding that species that sleep standing up are able to "lock their knees" so they remain standing up. I used to have a great picture of a cat sleeping in non-REM sleep with its head upright, and then stretched out totally limp during REM sleep.
I also don't believe in "cow tipping" and I grew up in farm country. Carol Carol L. DeVolder, Ph.D. Professor of Psychology Chair, Department of Psychology St. Ambrose University 518 West Locust Street Davenport, Iowa 52803 Phone: 563-333-6482 e-mail: devoldercar...@sau.edu web: http://web.sau.edu/psychology/psychfaculty/cdevolder.htm The contents of this message are confidential and may not be shared with anyone without permission of the sender. -----Original Message----- From: Serafin, John [mailto:john.sera...@email.stvincent.edu] Sent: Tue 2/23/2010 5:49 PM To: Teaching in the Psychological Sciences (TIPS) Subject: Re: [tips] Great Question about REM Good set of responses to the original question about REM & motor inhibition & eye movements. Just want to correct one response. Eye movements are not controlled by autonomic systems. The poster may have been thinking about functions like pupil dilation/contraction, which are, in fact, controlled by parasympathetic system. But movements of the eye are under separate control. Also, I'll just add that describing the effect as motor paralysis is probably an overstatement. Brainstem areas, during REM, inhibit motor neurons in the spinal cord. That does not necessarily imply total paralysis. And while I'm at it, I'll add my own question to this topic, which I've never come up with a good answer to. Some species sleep standing up. Why don't they flop over and fall down when they enter REM? John >Besides eye movements are functionally under the ANS -- John Serafin Psychology Department Saint Vincent College Latrobe, PA 15650 john.sera...@email.stvincent.edu --- You are currently subscribed to tips as: devoldercar...@sau.edu. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=12990.f9c1b5bf25d49031367434c598ee9250&n=T&l=tips&o=818 or send a blank email to leave-818-12990.f9c1b5bf25d49031367434c598ee9...@fsulist.frostburg.edu --- You are currently subscribed to tips as: arch...@jab.org. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=819 or send a blank email to leave-819-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
<<winmail.dat>>
