From: joedees@bellsouth.net
Date: Fri 18 Oct 2002 - 17:06:51 GMT
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> >From: joedees@bellsouth.net
> >Reply-To: memetics@mmu.ac.uk
> >To: memetics@mmu.ac.uk, fmb-majordomo@mmu.ac.uk
> >Subject: Re: electric meme bombs
> >Date: Thu, 17 Oct 2002 19:07:41 -0500
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> > > >From: joedees@bellsouth.net
> > > >Reply-To: memetics@mmu.ac.uk
> > > >To: memetics@mmu.ac.uk, fmb-majordomo@mmu.ac.uk
> > > >Subject: Re: electric meme bombs
> > > >Date: Thu, 17 Oct 2002 18:53:50 -0500
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> > > > > Joe Dees wrote:
> > > > >
> > > > > (bq)"We know in what order the afferent and efferent nerves
> > > > > face off across the Sylvan fissure, and which parts of the
> > > > > body they sense and move."(eq)
> > > > >
> > > > > Scott replies:
> > > > >
> > > > > Isn't the "Syvian fissure" also called the "lateral fissure"?
> > > > > Could you explain the above in a little more detail,
> > > > > especially about the sensation and movement of body parts? I
> > > > > have this nagging vision of a distorted "homunculus" along the
> > > > > fissure of Rolando (aka central sulcus between precentral and
> > > > > post central gyri) that must be clouding my judgement here.
> > > > >
> > > >There is indeed a distorted map of the body imposed upon the
> > > >fissure, just as there is a locational map imposed upon the
> > > >occipital lobe responsible for visual registry. Perhaps things
> > > >really are simpler than we have previously supposed, at least
> > > >until we get into the associative cortex.
> > > >
> > > But you haven't elaborated on what you were saying above about the
> > > lateral fissure. Were you thinking about the central sulcus
> > > instead?
> > >
> >I think that they're different names for the same feature.
> >
> The lateral fissure and the central sulcus are synonymous? I most
> certainly think NOT. Consult a basic anatomical diagram of the brain
> found in many physio psych or human anatomy books. A glossary in
> Galluscio's _Biological Psychology_ (at the end of chapter 2) places
> the central sulcus as divider between frontal and parietal lobes and
> the lateral fissure (as Sylvian fissure) "between the temporal and the
> frontal and parietal lobes".
>
> It was possible that you had something to say about the lateral
> fissure that I wasn't aware of, since I'm extremely rusty on my neuro
> stuff, but now that you can't distinguish between two very basic
> neuroanatomical landmarks I'm thinking that's probably not the case
> here.
>
I checked my BIOLOGICAL PSYCHOLOGY by James W. Kalat and I
did indeed get the two features confused; the afferent and efferent
nerves do indeed face off (and in a homuncular map kinda way) at the
central sulcus, as you state. It demarks the interface between the
motor-control precentral gyrus and the somatosensory postcentral
gyrus.
>
> ref:
>
> Galluscio EH. 1990. Biological Psychology. MacMillan Publishing
> Company. New York
>
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> ===============================================================
> This was distributed via the memetics list associated with the
> Journal of Memetics - Evolutionary Models of Information Transmission
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===============================================================
This was distributed via the memetics list associated with the
Journal of Memetics - Evolutionary Models of Information Transmission
For information about the journal and the list (e.g. unsubscribing)
see: http://www.cpm.mmu.ac.uk/jom-emit
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