Re: cerebral blood flow during sleep [HAPP-L]

[Alice Mills <amills@xxxxxxx>]

I'll look this up later if no one else finds your answer, blood flow might 
be discussed in Kandel et al.
There is a lot of cerebral activity during sleep - e.g. EEGs during REM 
sleep resemble awake activity.  Brain cells change in areas associated with 
learning and memory, I think a lot of this change occurs during sleeping 
hours.  I wouldn't be surprised, if, as a whole, the cerebrum is as active 
at night as during the day.

Yes on the redistribution of cerebral blood flow during certain tasks, 
that's the source of some of the evidence for the function of motor 
association areas.

At 11:03 AM 1/10/2003 -0800, you wrote:

> > Are there any neurophysiologists (or others) that can settle a 
> > disagreement for me?
>
> > I thought that cerebral blood flow increased to areas of brain that are 
> > active; this is the basis for scans such as the functional MRI scan.
>
> A student in my lecture said that his psychology text stated that cerebral 
> blood flow is the same during sleep and the awake state.  I think that 
> cerebral blood flow would be decreased during sleep.

Dr. Alice Mills
Dept. of Biological Sciences
University of Tennessee at Martin
Martin, TN  38238
(731) 587-7175
(731) 587-7187 (fax)


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