Much of this pondering has come to revolve around what I have called the local workspace (LWS) hypothesis. The hypothesis that consciousness arises from the organised activation of the neurons in a small patch of cortex, perhaps five square centimetres, probably located in one of the central structures (rather than in the cerebral cortex) and perhaps containing 100 million neurons. This in contrast to the popular global workspace (GWS) hypothesis which has it that consciousness arises from activity spanning large parts of the brain – activity which I grant is needed to build LWS – but not to deliver it. Of late, I have been more interested in how the brain does it, which, for the moment anyway, seems more accessible than why it does it.
In this, I might say, I have been greatly helped by the move, at least of this sort of science, to open access. Most of the time I do not have to pay for access to stuff, despite having no academic affiliation.
Blogging has been another hobby and, just presently, I have nine blogs: three retired, one active and five yet to come, these last only existing so as to reserve their names. The first four blogs are large and miscellaneous collections of material, most of it nothing to do with consciousness at all. And indeed, much of the material might well be described as trivia. By default, these blogs are all displayed most recent post at the top and they are to be found at:
http://pumpkinstrokemarrow.blogspot.co.uk/. Around 1,800 posts. October 2006 to October 2012. Retired.
http://psmv2.blogspot.co.uk/. Around 2,000 posts. October 2012 to February 2016. Retired.
http://psmv3.blogspot.co.uk/. Around 2,500 posts. February 2016 to November 2018. Retired.
http://psmv4.blogspot.co.uk/. Around 600 posts. November 2018 to present. Active.
But about 150 of all these thousands of posts are about consciousness or something close, with one of them in pumpkinstrokemarrow, with just about 25 of them in psmv2, with most of the rest in psmv3 and with the balance in psmv4. I posted an updated list of what seemed to me to be the more interesting of these posts in May 2018 at reference 1, with the title of this last post being a nod at the book noticed at reference 2. The present post is mainly a further update to that list.
Figure 1 |
Fortunately, all the blogs include a search feature. I have not dug very deep into this feature, but it does seem, by default, to do a Boolean ‘AND’ on the search terms you type into the box near the top left of the screen, illustrated at Figure 1 above. For example, give me posts containing the words ‘fox’ and ‘trap’. I think that the rule is whole word matches only, so that ‘trap’ would not find any of ‘entrap’, ‘traps’ and ‘trapped’, but there may well be subtleties in the rule which I have missed. In any event, I often know roughly what I am looking for, and this sort of search often works. Better than searching my archive, where the unit of search is the month rather than the post, a rather large unit in the absence of a rather good search term.
Figure 2 |
So far there have been four of these search keys, moving from one to the next when there has been some important shift, development or change of direction. The remainder of this post provides some description of these four groups and lists their contents.
The four groups
Sometimes referred to as the four series, thus accounting for the ‘sr’ bits of the four keys; sra, srb, src and srd.
Figure 3 |
Sra
10 posts, 20161231 to 20170317.
Early thoughts about organising what came to be called the local or layered workspace (LWS). A structure made up of a small number of layers, following in this the example of the computer packages used for describing buildings, their fixtures and fittings, each layer consisting of a large array of cells, after the fashion of an Excel worksheet, illustrated above at Figure 3. Layers, layer objects and column objects. Soft centred patterns. Seeing rectangles. Seeing red.
Srb
6 posts, 20170328 to 20170428.
A regrouping, having bumped into various technical problems. Exploring various ways of coding data on our two-dimensional arrays of real valued cells. The use of layers to code up complex scenes – like a second world war battleship at sea. Parts of objects and their labels.
Src
9 posts, 20170521 to 20170802.
Layers with velocity, to accommodate a steady movement across or of the visual field. Structuring in time with scenes, takes and frames. Background, foreground and other objects. Using high and low valued cells to define parts and their shapes instead of soft centred patterns. Column objects, composite objects and sequence objects. Sinks and sources of activation. Statements of rules.
Srd
22 posts (excluding this one), 20170904 to 20190603.
The move from the Excel workbook flavoured LWS-W to the neuron flavoured LWS-N. Triangulations of surfaces and shapes. Texture nets (green below) and shape nets (blue below). Thinking about other modalities, that is to say other than vision, important though vision is in the vertebrate world. For example, touch, sound and music, all of which depend on time in a way that vision does not.
Figure 4 |
Some key points
One part of this work is about trying to draw meaning out of the void, to update the first words of the book of Genesis, where the Lord was just starting work on an earth which was at that point just welter and waste and when there was darkness over the deep. In the sense that our LWS is hypothesised to be self contained and so cannot draw its meaning from elsewhere, from anywhere else; it has to have meaning of itself. How do we do that, starting from an empty data store? Thinking of LWS-N in particular, how do we organise the linkages of neurons to code up for ‘War and Peace’, the elephant in the room – or even something as apparently straightforward as seeing and experiencing a patch of red?
Another part is thinking about how that content, that meaning might be projected from the active, physical matter of the brain into the metaphysical matter of our subjective experience. How do we extract soul from body?
Yet another part is putting LWS in context. How it fits into the brain and body. Into the evolution and development of same. Into all the work on consciousness and unconsciousness done elsewhere, by others.
Listings
The ten posts of the ‘sra’ series
PSMV3
http://psmv3.blogspot.co.uk/2016/12/from-grids-to-objects.html
http://psmv3.blogspot.co.uk/2017/01/expressions-and-their-orders.html
http://psmv3.blogspot.co.uk/2017/01/lines.html
http://psmv3.blogspot.co.uk/2017/01/layers-and-columns.html
http://psmv3.blogspot.co.uk/2017/02/restatement-of-hypothesis.html
http://psmv3.blogspot.co.uk/2017/03/on-seeing-rectangles.html
http://psmv3.blogspot.co.uk/2017/03/soft-centred-patterns.html
http://psmv3.blogspot.co.uk/2017/03/activation-revisited.html
http://psmv3.blogspot.co.uk/2017/03/seeing-red-rectangles.html
http://psmv3.blogspot.co.uk/2017/03/coding-for-red-and-other-stuff.html
The six posts of the ‘srb’ series
PSMV3
http://psmv3.blogspot.co.uk/2017/03/a-new-start.html
http://psmv3.blogspot.co.uk/2017/04/shapes-not-numbers.html
http://psmv3.blogspot.co.uk/2017/04/its-chips-life.html
http://psmv3.blogspot.co.uk/2017/04/more-on-modes.html
http://psmv3.blogspot.co.uk/2017/04/a-ship-of-line.html
http://psmv3.blogspot.co.uk/2017/04/on-parts-and-properties.html
The nine posts of the ‘src’ series
PSMV3
http://psmv3.blogspot.co.uk/2017/05/recap-on-our-data-structure.html
http://psmv3.blogspot.co.uk/2017/05/in-praise-of-homunculus.html
http://psmv3.blogspot.co.uk/2017/06/on-scenes.html
http://psmv3.blogspot.co.uk/2017/06/on-elements.html
http://psmv3.blogspot.co.uk/2017/07/binding.html
http://psmv3.blogspot.co.uk/2017/07/rules-episode-one.html
http://psmv3.blogspot.co.uk/2017/07/rules-episode-two.html
http://psmv3.blogspot.co.uk/2017/07/rules-supplemental.html
http://psmv3.blogspot.co.uk/2017/08/occlusion.html
The twenty two posts of the ‘srd’ series
PSMV3
http://psmv3.blogspot.co.uk/2017/09/sensing-spheroids.html
http://psmv3.blogspot.co.uk/2017/09/coding-for-colour.html
http://psmv3.blogspot.co.uk/2017/09/geometry-and-activation-in-world-of.html
http://psmv3.blogspot.co.uk/2017/09/scoring-for-music.html
http://psmv3.blogspot.co.uk/2017/10/on-taxonomy-of-consciousness.html
http://psmv3.blogspot.co.uk/2017/11/a-dogs-life-reprised.html
http://psmv3.blogspot.co.uk/2018/01/an-introduction-to-lws-n.html
http://psmv3.blogspot.co.uk/2018/03/more-animal-game.html
http://psmv3.blogspot.co.uk/2018/03/descriptors.html
http://psmv3.blogspot.co.uk/2018/05/a-modest-change-to-layer-objects-of-lws.html
http://psmv3.blogspot.co.uk/2018/05/an-update-on-seeing-red-rectangles.html
https://psmv3.blogspot.com/2018/07/from-neurons-to-layer-objects.html
https://psmv3.blogspot.com/2018/08/unified-theories-of-cognition.html
https://psmv3.blogspot.com/2018/09/seeing-triangles-in-dots.html
https://psmv3.blogspot.com/2018/09/why-just-one-subjective-experience.html
http://psmv3.blogspot.com/2018/10/orientation.html
PSMV4
http://psmv4.blogspot.com/2018/12/of-cabbages-and-kings-more.html
https://psmv4.blogspot.com/2018/12/ensembles-and-their-description.html
https://psmv4.blogspot.com/2019/01/making-shape-net.html
https://psmv4.blogspot.com/2019/01/texture-nets.html
https://psmv4.blogspot.com/2019/04/a-speculation-moving-from-one-tooth-to.html
http://psmv4.blogspot.com/2019/06/synaesthesia-of-sort.html
References
Reference 1: http://psmv3.blogspot.co.uk/2018/05/an-update-on-seeing-red-rectangles.html.
Reference 2: Seeing Red: A Study in Consciousness - Nicholas Humphrey - 2009.
Reference 3: http://psmv3.blogspot.co.uk/2018/01/an-introduction-to-lws-n.html. Perhaps as good place as any to start. The seventh post in the ‘srd’ series.
Group search key: srd.
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