October 2017
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" as we know, there are known knowns; there are things we know we know.
We also know there are known unknowns;
that is to say we know there are some things we do not know.
But there are also unknown unknowns - the ones we don't know we don't know ".

Donald Rumsfeld, United States Secretary of Defense, briefing, 2002 ...

the same is true about schizophrenia - it remains a mystery ?


Hippocampal failure is the proximate cause of schizophrenia.
{These academic references are those that confirm hippocampus failure

So, hippocampus early development is an important start to think how and why things have gone wrong.

Early hippocampus development

perinatal asphyxia and hippocampus damage

Perinatal hippocampus damage

Pruning

pruning explained in The scientist Journal
pruning: does immunity play a part

ANATOMY hippocampus

Hippocampus:- anatomy and function

bast

Sekar et al :- Abtract
Schizophrenia is a heritable brain illness with unknown pathogenic mechanisms. Schizophrenia's strongest genetic association at a population level involves variation in the major histocompatibility complex (MHC) locus, but the genes and molecular mechanisms accounting for this have been challenging to identify. Here we show that this association arises in part from many structurally diverse alleles of the complement component 4 (C4) genes. We found that these alleles generated widely varying levels of C4A and C4B expression in the brain, with each common C4 allele associating with schizophrenia in proportion to its tendency to generate greater expression of C4A. Human C4 protein localized to neuronal synapses, dendrites, axons, and cell bodies. In mice, C4 mediated synapse elimination during postnatal development. These results implicate excessive complement activity in the development of schizophrenia and may help explain the reduced numbers of synapses in the brains of individuals with schizophrenia.

attention fixes hippocampus

two memories co-operates

stress shifts the memory stream

oscillatory traffic

thalamic spindling: background

Comment on spindling

Hippocampus is a Hub

a Hub like this

email me

a carer site


1.

adolescence is a time of brain 'pruning'.
It is also the time when schizophrenia most commonly starts, the florid illness preceded often by a time of cognitive and life coping failure.

What is pruning 'doing'
networking templates

Summary.
Structural brain modules become more segregated during youth
Targeted strengthening of hub edges simultaneously promotes network efficiency
Enhanced modular segregation mediates improvements in executive function in youth. The human brain is organized into large-scale functional modules that have been shown to evolve in childhood and adolescence.
Evolving modular topology facilitates global network efficiency and is driven by age-related strengthening of hub edges present both within and between modules.
Critically, both modular segregation and network efficiency are associated with enhanced executive performance and mediate the improvement of executive functioning with age.

Together, results delineate a process of structural network maturation that supports executive function in youth.

New August 2017 :-

Human Brains need the structure of a a Story

Gazzinga, studying 'splitbrain' patients done for epilepsy suppresion concluded that the left brain does the cognitive and analytic work: the right brain organising the sensory/motor networks. He tries out Mood influence.

The effect of reacting to a fear producing movie

Using a very elaborate optical computer system that detects the slightest movement of the eyes, we were able to project a movie exclusively to the left visual field. If the patient tried to cheat and move her eyes toward the movie image, the projector would automatically shut off. The movie her right hemisphere saw was about a vicious man pushing another man off a balcony and then throwing a bomb on top of him. It then showed other men trying to put out the fire. When VP was ? re- tested on this problem, she could not access speech from her right hemisphere. When asked about what she had seen, she said, "I don't really know what I saw. I think just a white ash." I asked, "Were there people in it?" VP replied, "I don't think so. Maybe just some trees, red trees like in the fall." I asked, "Did it make you feel any emotion?" VP said, "Maybe I don't like this room, or maybe it's you, you're getting me nervous." Then VP turned to one of the research assistants and said, "I know I like Dr. Gazzaniga, but right now I'm scared of him for some reason."

This experimental evidence merely illustrates a rather extreme case of a phenomenon that commonly occurs to all of us. Our mental systems set up a mood that alters the general physiology of the brain. In response, the verbal system notes the mood and attributes a cause to the feeling based on available evidence. ? the delusion develops.
Once this powerful mechanism is clearly demonstrated, given the complexity of real-life emotional stimuli, one cannot help but wonder how often we are victims of spurious emotional/cognitive correlations.



1.


december2016
Schizophrenia hippocampal neurogenesis influences

New hippocampus academic research


1.
hippocampus enhances sensory responses.

2.
bast
too much hippo inhibition is bad for attention
prefrontal and hippocampal neural disinhibition disrupts regional cognitive functions (including prefrontal attention and hippocampal memory function


Important - current academic references
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