Received: by alpheratz.cpm.aca.mmu.ac.uk id LAA19483 (8.6.9/5.3[ref pg@gmsl.co.uk] for cpm.aca.mmu.ac.uk from fmb-majordomo@mmu.ac.uk); Tue, 23 Jan 2001 11:29:48 GMT From: "Chris Lofting" <ddiamond@ozemail.com.au> To: <memetics@mmu.ac.uk> Subject: RE: ....and the beat goes on and on and on... Date: Tue, 23 Jan 2001 22:37:50 +1100 Message-ID: <LPBBICPHCJJBPJGHGMCIMEBACNAA.ddiamond@ozemail.com.au> Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Importance: Normal In-Reply-To: <A4400389479FD3118C9400508B0FF230010D1A5E@DELTA.newhouse.akzonobel.nl> X-RBL-Warning: (orbs.dorkslayers.com) 203.2.192.85 is listed by dorkslayers.com Sender: fmb-majordomo@mmu.ac.uk Precedence: bulk Reply-To: memetics@mmu.ac.uk
Posner, M.I., and Raichle, M.E. (1997)"Images of Mind" Scientific American
Library in particular p15, p210-212
(P15 contains a diagram with an emphasis on visual processing.) Posner has a
major interest in the attention system. This particular text contains a nice
set of PET, fMRI scans etc
Gazzaniga, M.S., Ivry,R.B., Mangun G.R. (1998)"Cognitive Neuroscience : The
Biology of the Mind" Norton:
from the index alone:
"what" and "where" pathways
and anatomy of cerebral cortex, pp51-52 (the text : "Two pathways from the
striate cortex to extrastriate regions convey prominent streams of
information (fig 2.29) One pathway flows from V1 to the temporal lobe
(ventral pathway or "What" pathway) and covers the analysis of stimulus
features and their conjuctions, and ultimately the information is used to
carty out form discrimination and object identification. The other pathway
prohjects from V1 toward the parietal lobe (dorsal or "where" pathway) and
carries information about the stimulus motion and localisation within visual
space.")
and attention 227-29, 244
and lateralization/specialization, 355
and perception, 150-153, 158, 161, 165-175, 204
and purpose of, 175 (the text: "In sum the what-where dichotomy offers a
functional account of two computational goals for higher visual processing.
This distinction is best viewed as a heuristic one rather than reflecting an
absolute distinction....etc etc"
Analysis of audition system etc shows the same patterns. Interestingly, from
a psychological perspective, the left favours the known and the right the
unknown (what could be?). When some sensory data is unknown the RIGHT lights
up more. Once the data is identified, named, objectified, so future exposure
leads to a LEFT bias. This reflects CONTEXT analysis, a relational process
tied to "WHERE".
Note the emphasis here is on BIAS and that is because, from reading all of
my other references what emerges is a fractal-like process from neuron
through lobes to the hemispheres.
In each is the other when you get to more abstract levels but the
development context leads to establishing the biases I emphasise.
The dynamics perspective is covered in such texts as "The Two Sides of
Perception" and in such ongoing work as that of Prof. Jack Pettigrew at the
University of Queensland.
The dynamics include the oscillations left/right etc and out of that
accumlated time in one side or the other leads to an emergence of a general
bias in thinking favouring the particular characteristics of that side in
which the most time was spent.
The fractal patterns seem to stem from the neuron dendrite/axon processing.
Move up to columns of neurons in a particular lobe and you find
interdigitations of an emerging 'left/right' distinctions. Note these are in
the lobes of BOTH sides. (and all over the brain, visual cortex, frontal
cortex etc etc)
Move to lobe-to-lobe comparisions and the 'object' temporal lobe is up
against the 'relationship' parietal lobe ON BOTH SIDES.
Move up to the top, the left-right comparisons and the patterns continue but
now we see a general bias, namely the left to precision, to the 'dot' and
its expression (axon-like behaviour), the KNOWN, and the right to
approximations, field, pattern matching and the UNKNOWN.
The feedback loops out of simple neurons link dendrite-axon systems such
that they cooperate; but the SOURCE of feedback is still dendrite-like, tied
to context sensitivity -- right brained.
The oscillations we see in the brain work leads us to a recursion of the
object/relationship dichotomy in that the oscillations come out of a
'disturbance' and reflect attempts to re-establish 'stillness', equilibrium.
The oscillations reflect object-relationship distinctions applied to
themselves and out of that comes sets of basic meanings... we are in deep
cognitionland here...and out of that comes....:-)
Chris.
------------------
Chris Lofting
websites:
http://www.eisa.net.au/~lofting
http://www.ozemail.com.au/~ddiamond
List Owner: http://www.egroups.com/group/semiosis
> -----Original Message-----
> From: fmb-majordomo@mmu.ac.uk [mailto:fmb-majordomo@mmu.ac.uk]On Behalf
> Of Gatherer, D. (Derek)
> Sent: Tuesday, 23 January 2001 12:36
> To: 'memetics@mmu.ac.uk'
> Subject: RE: ....and the beat goes on and on and on...
>
>
> Chris:
> >From neurological research it has been discovered that humans
> seem to derive
> meaning by processing data using the what/where dichotomy
>
> Derek:
> from what neurological research? A single reference will do.
>
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