Autopoiesis and Cognition: The Realization of the Living by Humberto R. Maturana, Francisco J. Varela

By Humberto R. Maturana, Francisco J. Varela

What makes a residing method a dwelling method? what sort of organic phenomenon is the phenomenon of cognition? those questions were often thought of, yet, during this quantity, the authors reflect on them as concrete organic questions. Their research is daring and provocative, for the authors have built a scientific theoretical biology which makes an attempt to outline dwelling structures now not as items of commentary and outline, nor at the same time interacting structures, yet as self-contained unities whose in simple terms reference is to themselves. The end result in their investigations and in their dwelling platforms as self-making, self-referring self sufficient unities, is they stumbled on that the 2 questions have a typical resolution: dwelling structures are cognitive platforms, and dwelling as a procedure is a technique of cognition. the results of their investigations is a very new viewpoint of organic (human) phenomena. throughout the investigations, it used to be discovered whole linguistic description referring to the ‘organization of the dwelling’ used to be missing and, actually, used to be hampering the reporting of effects. accordingly, the authors have coined the observe ‘autopoiesis’ to exchange the expression ‘circular organization’. Autopoiesis conveys, on its own, the primary function of the association of the dwelling, that's autonomy.

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Urticaria can therefore broadly be divided into ordinary/idiopathic (acute/chronic), contact allergic, cholinergic, physical or urticarial vasculitis. 2. 5). 6). 4 Ordinary urticaria on the neck. minutes to hours only and may recur over <6 weeks – acute urticaria, or attacks may become chronic (>6 weeks). In 50% of patients with ordinary urticaria no underlying cause is found. Possible triggers of acute urticaria include infections, vaccinations, medications and food. Generally the more persistent the attacks of urticaria, the less likely an underlying cause is identified; this is termed chronic idiopathic urticaria.

Classification of urticaria Urticaria is traditionally classified as acute or chronic depending on whether symptoms last for less or more than 6 weeks. Another approach is to classify urticaria according to the underlying cause, but in 50% of cases no cause is identified (idiopathic). Urticaria can therefore broadly be divided into ordinary/idiopathic (acute/chronic), contact allergic, cholinergic, physical or urticarial vasculitis. 2. 5). 6). 4 Ordinary urticaria on the neck. minutes to hours only and may recur over <6 weeks – acute urticaria, or attacks may become chronic (>6 weeks).

Causes of generalized pruritus with skin changes This occurs in more widespread inflammatory skin diseases such as widespread eczema/psoriasis, scabies, allergic drug eruptions (antibiotics, anticonvulsants), graft versus host disease (following bone marrow transplantation), prebullous pemphigoid (dermatitic eruption before blisters appear), cutaneous lymphoma (may start over the buttocks as more localized disease), parasitophobia (belief that there are parasites under the skin; excoriations are seen), body lice or pubic lice (body lice live in the clothing), viral exanthems (rashes associated with systemic viral illness), urticaria (generalized ‘hives’), xerosis (dry skin, especially in the elderly).

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