Showing posts with label boundaries. Show all posts
Showing posts with label boundaries. Show all posts

Monday, 5 July 2021

Paul Klee and Markov blankets

The mind in the body in the world (study for stained glass)

Biological systems are autonomous, or self regulating. We tend to think of the things inside a biological system, such as a forest as being lots of separate things, but they are all interdependent, however when each of the elements is looked at it can appear as if it has boundaries. For example an individual tree can be thought of as just that, a tree. But it cant exist as that, its roots tap down deeply into the soil and its leaves are breathing in carbon dioxide. I.e. although for the sake of identification it might be useful for us to be able to nominate a tree as a separate thing, in reality it is an event or aspect of a process. But we can also think of a collection of atoms we call a tree being nested within another set of atoms we call a forest. The boundaries of biological systems, from individual cells to trees (or indeed people) can be thought of as the supporters of free energy, or places where that energy meets other forms of energy and where interactions take place that help to stabilise the entity. If so, something called a Markov blanket can be used to define its boundaries in a statistical sense, i.e. instead of a solid wall you have a series of probabilities whereby something is and isn't at the same time, called in this instance, the active inference scheme. You can infer something is in existence but when you look at it directly it hardens up and becomes a fixed probability. If this sounds like something from quantum mechanics, well it sort of is. For a long time physicists have realised that things are only fixed as they are if you look for them. On a larger scale a collective of Markov blankets can self-assemble into a global system that itself has a Markov blanket that links it to the larger universe; these linked autonomous systems can therefore be understood as having layers of nested and self-sustaining but permeable boundaries. It has been proven mathematically that any living system can be described as a Markov blanketed system and, this is the interesting thing, that the boundaries of such systems need not be co-extensive, or extending over the same area as the biophysical boundaries of a living organism that exists within it. I.e. there is a certain amount of give and take. If you look at the diagram below try to think of the dark spots as a tree, or at least the tree event or fluctuating core of what we tend to think of as a tree. However as part of a Markov blanketed system the edges of 'tree-ness' are not that clear and the tree extends out into the surrounding system, lets say the air or the soil, whereby it is hard to differentiate tree-ness from soil-ness or air-ness. Moving the light grey dots about will eventually disturb the pattern of the dark dots, but on a good day the pattern is pretty predictable statistically and on the whole the dark dots are stable enough for long enough to be at times seen as a tree or whatever else words try to isolate from the situation. Everything is though never static, hence the animated gif version. 


Object/space folding into Markov blankets

If you randomly generate a mess of dots, apparently after a time these dots begin to form patterns, i.e. free energy systems eventually appear to become self regulating. As I'm into diagrams at the moment perhaps another diagram might help. If I place a ball on top of a smooth curved hill as in the diagram below, it is unstable and will seek stability by rolling down until it reaches the ground and a state of stable equilibrium.





But as a human being you tend to take your ball, (your head) and have it kept in a vertical position. If it was up to physics we would be always be lying flat on the ground (lowest energy level), i.e. we tend to spend most of our lives in a state of unstable equilibrium. This is because we are part of a system. If you look at things as separate entities they work as separate entities. We know a lot about parts but very little in comparison about wholes. But a tree is as we have seen, a part of a system. This situation is called an open systems exchange. Energy, matter and information all enter and leave the system, forms can change, interactions occur and energy can be stored and released. These systems are regulated by feedback loops, which can be either positive or negative. Earth as a whole is warming up and cooling because of these systems, and we have seen this as part of our awareness of how global warming works. If the ice caps are large they form bright, reflective surfaces and they will reflect more of the sun's energy back into space, therefore less heat remains on the Earth's surface; thus cold conditions lead to more cold. However, when air cools, it holds less moisture and relative humidity goes up and condensation will occur. Condensation is water changing from its gas to its liquid state. In a gas there is a lot of energy being used to keep all those atoms flying around at a distance from each other, but as the situation cools down the gas becomes a liquid which needs less energy to maintain its form and the energy has to go somewhere. This energy is known as the latent heat of condensation. The latent heat of condensation then starts to heat up the surrounding air and leads to subsequent temperature increases. Our bodies operate very like this, interconnected feedback loops allow us to regulate our body temperature, blood sugar levels etc.


The diagram immediately above is a different way of representing a Markov blanketed system, but the one made of dots is more like the real situation. The boundary between one thing and another is never a nice sharp line, it is a permeable membrane that is constantly in movement as it adjusts to an ever changing world, so perhaps its better to think of the line of curvature more like the curved line in the image below, something rhythmically punctuated and permeable. 
Representation of an outer edge of a Markov blanket

The image above is an image whereby I was trying to visualise a body immersed into its environment with a permeable boundary allowing information to pass from one part of the system to another. The image at the top of this post was a different attempt at making an image whereby the figure and ground distinction was removed by thinking about the image as a design for stained glass. The floor, the bodies and the surrounding room space, interpenetrate each other as flat planar structures. I have also been thinking about scale and our bodies can be scaled in a variety of ways. For an ant climbing up my leg it is a huge landscape, and when I look out over my chest and down to my legs and my toes, I find another landscape type experience. But as I step away from myself, (an interesting idea in itself) I can see myself as a body, and I'm in portrait mode or human scale. However as you move out and away from the situation my body becomes a mere speck on the horizon. I am in relation to much larger visions, such as world, solar system or galaxy totally insignificant. (See this earlier post for details as to how this works)

This ability to think about scale changes is helpful because it allows us think about different types of boundaries. For instance at a molecular scale our bodies are composed of elements such as sodium, potassium, calcium, and magnesium, and each has a specific electrical charge. Our cells use these charged elements, called ions, to generate electricity. The contents of a cell are protected from the outside environment by a cell membrane. This cell membrane is made up of lipids that create a barrier that only certain substances can cross to reach the cell interior. (I have looked at lipids before in a post about why ink sticks to paper and I thought then that there were deep metaphors that could be constructed from the way they operate) Not only does the cell membrane function as a barrier to molecules, it also acts as a way for the cell to generate electrical currents. Resting cells are negatively charged on the inside, while the outside environment is more positively charged. This is due to a slight imbalance between positive and negative ions inside and outside the cell. Cells can achieve this charge separation by allowing charged ions to flow in and out through the membrane. The flow of charges across the cell membrane is what generates electrical currents. Cells then control the flow of specific charged elements across the membrane with proteins that sit on the cell surface and create an opening for certain ions to pass through. These proteins are called ion channels. When a cell is stimulated, it allows positive charges to enter the cell through open ion channels. The inside of the cell then becomes more positively charged, which triggers further electrical currents that can turn into electrical pulses, called action potentials. These action potentials are what we think of when we become aware of ourselves doing things. Our bodies use certain patterns of action potentials to initiate movements, thoughts and behaviours. Which is great, but when it goes wrong we have a disruption in our network of electrical currents, which we usually call illness. This is something I'm particularly aware of because I have a heart condition, for my heart to pump, cells must generate electrical currents that allow the heart muscle to contract at the right time. Irregular electrical currents can prevent heart muscles from contracting correctly, and this is why I have an irregular heartbeat.

 
Memory of a feeling tone

As we become aware of interroception a fusion occurs between the memory of exterior perception and an interior somatic awareness. The image above was constructed as part of a series of responses to remembering how it felt to have a painful bunion. This was then contrasted (below) with an image made when actually in pain.

Image of a pain

Paul Klee suffered from scleroderma an autoimmune condition that happens when the body’s immune system starts to attack itself. Damage by the immune system causes excessive inflammation and increased production of collagen, leading to scarring or fibrosis of the body’s tissues and organs, hence the name, 'scleroderma'. His own artwork you could think of as a way of visualising the internal working and structures of art itself. His 'Pedagogic Sketchbook' being a sort of Gray's Anatomy of the visual world. It was as if he wanted to reveal what lay under the skin of all that Victorian figurative painting.  

I have been returning to Klee's work as a loadstone or check-in to help me with my next steps in trying to visualise the invisible. How to translate the feeling tones that emerge from the inner body into visual images and it has been a back to basics experience, and has forced me to get rid of a lot of visual baggage.

Klee: Äliup, 1931. Watercolor and pencil on paper on cardboard, 47.9 x 31.4 cm

Klee's world begins with the potential of a dot. More than one dot creates energy, either a balance or an in-balance is created and as these two situations are created and uncreated 'life' begins to emerge from the surface of the paper. As the surface becomes animated moments of more concentrated energy occur, in the case above forms emerge picked out in dark lines, and in the image below shapes become intimated, they drift one into the other and occasionally pop into being, such as the archway or the circle. 

Klee: Ad Parnassum 100 x 126 cm

I found that by returning to Klee's work after many years, that it seemed as fresh and as inspiring as it did all those years ago when I first encountered it. In the image below we find lines now taking over the image making load, they gradually become signs, but are still also just lines, nothing is fixed but at the same time we can see forms emerging. These images feel very like music, they touch us with their rhythmic pulse, like small creatures, we can feel their heartbeat as we hold them.  

Klee: untitled. 

Last week I was able to visit the Pallant House Gallery in Chichester and they had a Paul Klee image on exhibition. Titled 'Clouds' it was stunning. A delicate line image was constantly emerging from the centre of a floating cloud of darkness. The tonality was handled so subtly, that it was hard to see how it was achieved, until you realised that he must have used layer after layer of thin washes to achieve an effect as if the darkness was an integral part of the paper rather than something applied to it. The thin ink lines that drifted in and out of the dark, were like so many of Klee's lines 'going for a walk', lines that were looking for an idea to become, a form to make, always in a moment of becoming rather than an idée fixe. The image was far too delicate to photograph, so you will have to imagine it, and perhaps that's a good thing, we are looking at too many images on line at the moment and we can tend to think that's how they are, but only certain things look good on a screen and it's important that we don't forget that. 


From a series of drawings of the body as a self-aware entity

See also:

A growing series of posts that follow the evolution of an idea





Sunday, 1 September 2019

The Frame and the Banner: Venice 2019 a coda

As always as I walked around the Arsenale I was interested in how work had been hung or presented. In particular I was looking at the way 2D work had been framed or not framed and how this was helping to shape the meaning or audience relationship with it.  So my final post on Venice looks at this and then wanders off away from Venice into more general thoughts about the frame as a type of frame within a frame, or physical Venn diagram. 

Jill Mulleady

When looking at the work of Jill Mulleady I was as much as anything fascinated by how she had had her images presented. I have put up the occasional post on framing and if you read my previous posts you will be aware of how irritating I can sometimes find works framed inappropriately. It is perhaps hard to see from the image of her work above, but she had had every painting she exhibited in the Venice Arsenale sunk back into the wall, so that the images were flush with the wall's surface. The wall was also painted matt black, so that the 'washed out' or watercolour feel to her paintings was emphasised. 

Jill Mulleady 

It's interesting to hear her talk about the narratives that she uses, she is very aware of the changes in emotional intensity between urban and rural subjects. I presume the black was for her a way of heightening the difference between the two moods she was dealing with. By sinking the images into the wall she is also able to get away from the 'objectness' of the paintings and in doing so seeks to gain a narrative unity in a similar way to how a series of wordless graphic novel images might work together. 
The Japanese artist Mari Katayama often uses very elaborate frames for her photographs of herself and her ongoing elaborate scenarios that reflect on her own disabilities. Katayama had both legs amputated when she was a girl and has since had to use a range of ever changing prosthetics. She photographs herself in various elaborate stagings, herself and her prosthetic legs, usually being centre stage. Investigating issues of beauty, frailty, sensuality, femininity, vulnerability and characterisations of her physicality as being less than able bodied. Katayama confronts society's obsession and anxieties about bodily appearance. Her adjusted frames work to support the ideas going on in the images. Elaborate gilt frames, (seen in the past as symbols of classical beauty) have added inserts, sometimes very obviously screwed into them, suggesting that they are somehow made less whole by the additions or in several cases lots of empty shells made into a decorative line. Shells can in some ways be thought of as cast offs, empty forms that the creature that inhabited them no longer needs. Katayama's old prosthetics are also cast off as she grows or as she changes her personal sensibilities. 




Mari Katayama: Framing details 

Martine Gutierrez’s photographs were initially produced for a multi-page spread in Gutierrez’s Indigenous Woman magazine – a glossy magazine with its own beauty advertisements, fashion spreads and a letter from the editor all featuring the very same model, stylist, photographer, writer, and editor. Each of the frames had been painted on so that the frame sat in the same colour range and quality of aesthetic values determined by the image. The exotic nature of the subject matter echoed by the way the frames had themselves been exoticized. 




Martine Gutierrez

Framing is a form of presentation and I would suggest that hanging is a powerful alternative possibility when it comes to presenting flat images. Ricardo Garcia's huge drawings in the Venezuelan Pavilion hang as banners cutting into the space, the red lighting further creating an atmosphere tense with expectation. 

Ricardo Garcia

Banners have a long history, one that evokes belonging to a membership of something or militancy, from miners' banners to those used in Nazi rallies or they can belong to folk traditions, such as the fantastic work of Jonny Meah, who made banners for the circus and travelling freak shows.


Jonny Meah

Jonny Meah

Jonny Meah always works out his images through drawing, the one below being his solution to the problem of a boy/girl. I find his work really powerful and think it would be interesting to see his work alongside that of artists that are seen as part of the high art canon. On the other hand of course the societal attitudes that he was reflecting upon when he was working have changed, what was at one time seen as freakish, is now seen as simply part of the human condition, we are far more prepared to accept difference, his work can now disturb as much as intrigue, but I still feel that if you have not come across artists like him before, it is worthwhile doing some research on how and why they operated in the way they did. 

Jonny Meah

The banner can be a sophisticated tool of the establishment or something used within a people's 'folk' tradition, and artists have responded to both ends of the spectrum.


Does form follow function?

I find it slightly disconcerting that the banner format has more lately been appropriated by my local art gallery, as well as other art galleries throughout the world. The hanging banner within an architectural setting is about the making of public messages and only those powerful enough to have access to and ownership of public buildings can usually use them.




However street protest also uses a banner format, some old formats such as the miners' banners, clearly themselves imitating earlier religious conventions.



The banner tradition continues, in particular it has become associated with feminist protest movements and because of the present political climate in the UK I would suggest that the banner will be making a comeback. 

Contemporary UK street protest

Mark Wallanger has made work about these public displays of protest, his 'State Britain' installation, being a faithful reproduction of Brian Haw's own one man protest placards and banners. 

Mark Wallanger: State Britain: 2007

Brian Haw

The Nordic Pavilion in Venice was hosting an exhibition entitled 'Weather Report: Forecasting futures'. It was an attempt to put together a group of artists that were concerned to work in a territory that used to be called science fiction or speculative fiction, therefore when framing an idea it had to evoke a certain futurity. Ane Graff presented an image of genetically modified wheat framed in such a way that it appeared to be emerging from some sort of isolation tank. The frame in this case now becoming an extension of the idea into the surrounding architecture. 

Ane Graff: Nordic Pavilion Venice

Drawing a frame around something is a basic conceptual idea. It separates one thing from another. 
By drawing a line around something we separate it out, the red circle around a word is in many ways very similar to the frame around an image. In the same way that the circle separates the word from its context within the sentence, a frame separates an image from its context within the wider world. As a concept it is a very powerful one, one that in mathematics is called set theory and as a way of illustrating certain aspects of set theory we have Venn diagrams. I could argue that all frames are in essence physical Venn diagrams and they help us think about how ideas can belong to the world or be a reflection on the world. 

Thinking of frames within frames reminds me of what happened to the Venezuelan Pavilion this year. You could think of each pavilion in Venice as a type of frame, in the terms of the diagrams above each pavilion would be a disjoint set, separate from each other. (In mathematics, two sets are said to be disjoint sets if they have no element in common) Within each pavilion Set (A) there would be framed individual works. These would be subsets (B) of set (A). We normally don't think of the power of the pavilion as a frame, we simply walk through the entrance to get in to see the work on show. But because of economic and political unrest in Venezuela, on the opening of this year's biennale the Venezuelan Pavilion remained closed, the doors padlocked shut. Suddenly the focus of the art world was on the locked doors, in effect the framing (the pavilion) was now operating as the main carrier of meaning. 
An intersection of politics, mathematics and art is something that often occurs, if only because they are three fundamental ways for human beings to make sense of the world. They are glued together within art as metaphor. See this earlier post. 

A rambling post again but hopefully within the ramble there are some points of interest. Don't forget when visiting exhibitions to look at how the work is presented, you will have to present your own work in end of year shows, outside exhibitions and to a wide range of people via on line formats. each time presentation will be an issue, so he more you look at how other people are doing it and the more you consider the contextual implications of the various approaches to it, the better choices you will make. 

Sometimes though framing is simply a physical job to do, this earlier post shows one way to make a frame: Framing a large drawing. The cutting and sawing and the thinking through how all the elements fit together involve a lot of basic geometry, a discipline that would have evolved out of physical actions that demanded a certain amount of precision, like planning for a building or deciding where boundaries are. Doing, always comes before theory. 

A frame can also be part of the conceptual thinking about edge; see this post. 

See also:

The banner
Framing
From drawing to installation