Paul Isaacs' Blog

Autism from the inside

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Autism & A Difficult Birth – Cerebral Hypoxia, Silent Stroke, Middle & Posterior Arteries, Agnosias & Apraxias

Baby 1987 2



Note – This is a personal experiences of the trajectory of my Autism

I certainly had  Cerebral Hypoxia as apart of a difficult birth I was born a month premature and through Caesarian Section . The Cerebral Arteries also had a part to play in this also.

Middle Cerebral Artery

Middle Cerebral Artery Syndrome 

Which resulted in the following –

Posterior Cerebral Artery

Stroke Not not all these symptoms apply to me

Peripheral territory (Cortical branches) – Not not all these symptoms apply to me

  • Homonymous hemianopia (often upper quadrantic): Calcarine cortex or optic radiation nearby.
  • Bilateral homonymous hemianopia, cortical blindness, awareness or denial of blindness; tactile naming, achromatopia (color blindness), failure to see to-and-fro movements, inability to perceive objects not centrally located, apraxia of ocular movements, inability to count or enumerate objects, tendency to run into things that the patient sees and tries to avoid: Bilateral occipital lobe with possibly the parietal lobe involved.
  • Verbal dyslexia without agraphia, color anomia: Dominant calcarine lesion and posterior part of corpus callosum.
  • Memory defect: Hippocampal lesion bilaterally or on the dominant side only.
  • Topographic disorientation and prosopagnosia: Usually with lesions of nondominant, calcarine, and lingual gyrus.
  • Simultanagnosia, hemivisual neglect: Dominant visual cortex, contralateral hemisphere.
  • Unformed visual hallucinations, peduncular hallucinosis, metamorphopsia, teleopsia, illusory visual spread, palinopsia, distortion of outlines, central photophobia: Calcarine cortex.
  • Complex hallucinations: Usually nondominant hemisphere.


Due to a silent stroke within the womb which is to do with

Additional injury to the left hemisphere to the such as

and the rest such as Social Social-Emotional AgnosiaAlexithymia for example where genetics.


It is important to know the trajectory and the why’s and the hows? of how someone has Autism, all this being said I will not let this DEFINE my PERSONHOOD but it does continue to explain why a process and communicate in a particular way. 🙂

Paul Isaacs 2014

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Ataxic Cerebral Palsy Apart of my Autism Fruit Salad? D.Williams

Premature 3



Certainly one to consider as part of my “Fruit Salad” I have also always been “stiff legged” so hypotonia in both my legs and middle/trunk of my body, issues with sports, holding cutlery, Apraxia of speech means I do have a monotone voice at times which is loud – with unusual inflection, slow eyes/mismatched eye movements also to do with Visual agnosias and eye darting/flickering. Interesting.  This also overlaps with Visuospatial dysgnosia and Dyslexia. Also Cerebral Hypoxia at birth kind of makes sense to me. The more you learn the more you understand. 🙂 

ATAXIC CEREBRAL PALSY – OVERVIEW – copyright from cerebral palsy alliance 

What causes ataxia?

Ataxia results from damage to the cerebellum. The cerebellum is the balance centre of the brain. The cerebellum fine-tunes movement commands in order to compensate for whatever posture is being used. It also accounts for the various forces being generated by different parts of the body.
What does ataxia look like?
Ataxia can affect any part of the body and impact upon the movements required to do many day-to-day activities.
It can affect a person’s legs, arms, hands, fingers, speech, eye movements and even muscles involved in swallowing.
Effect on the upper limbs (arms and hands)
When ataxia affects the arms and hands it may cause a tremor or shakiness due to the over-correction of inaccurate movements – this means that when a person reaches for an object, they overshoot the target.
It also results in difficulty performing tasks requiring precise finger movements such as handwriting or using cutlery, or movements that require regular repetition such as clapping.
Effect on the lower limbs (legs)
When ataxia affects walking, a person is unstable and likely to fall. As a result, the person usually walks with the feet spread further apart than the hips, which is known as a ‘wide-base gait’. This is done to try to compensate for their instability and poor balance.
This way of walking can sometimes give the mistaken impression that the person is under the influence of alcohol or drugs. Because their balance is affected, the person may also fall without reason, or be unable to compensate for variations in the ground surfaces or an accidental mild bump from the side.
Effect on speech and swallowing
Ataxia may have an affect on speech and swallowing. When ataxia affects speech, it is sometimes called ‘scanning’ speech – the person uses a monotone voice with a breathy sound; sometimes there are unusual accelerations or pauses between their syllables.
Effect on the eyes
Ataxia may sometimes cause slow eye movements. When ataxia affects the eyes, if the person attempts to change their eye-gaze quickly, their eyes often miss the target. It is like the eye’s overshoot or underestimate their mark and then have to make ‘catch-up’ movements.