# MODULE 1: Clinical Interview and Epigenesis

## Impact of Bed Rest Pregnancy and Stress on the CNS
In the diagnostic form, we ask about the course of pregnancy. A bed rest pregnancy eliminates the natural stimulation of the fetal vestibular system, which usually occurs through the mother's swaying gait. The lack of these gravitational stimuli results in delayed myelination of the vestibulocochlear nerve (VIII) and poor formation of the vestibulospinal tracts. Clinically, this leads to decreased muscle tone in the child, balance difficulties, and gravitational insecurity visible in the clinic.

On the other hand, severe chronic maternal stress causes cortisol to cross the placenta. Cortisol damages newly forming receptors in the fetal hippocampus, which in the future results in working memory deficits, sleep problems, and over-reactivity of the amygdala (emotional reactivity examined in the Psychiatry section).

## Epidural Anesthesia and Cesarean Section
The question about the delivery method is not random. Children born naturally receive powerful proprioceptive compression (pressure) while squeezing through the birth canal. This "massive pressure" is a facilitating stimulus that calibrates the tactile system (gating in the posterior horns of the spinal cord). Epidural anesthesia reduces uterine contractions, lowering this natural compression. A C-section completely deprives the newborn of this sensation, which directly correlates with tactile defensiveness in preschool age (lack of habituation and calibrated pain thresholds).

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# MODULE 2: ASI - Reflexes and Anatomy of Senses

## Vestibular System (Nystagmus, Gravity)
![Semicircular canals](resource:assets/images/vestibular.png)
The vestibular organ is a gravity sensor. The semicircular canals register rotary motion. Post-rotary nystagmus (a scale in the application) is related to them. Rotation causes the flow of endolymph bending the cilia of the receptors. The fluid stops with a delay after the rotation ceases, causing a physiological, reflex movement of the eyeballs. Too short a nystagmus indicates vestibular under-reactivity, and too long - hyper-reactivity. The utricle and saccule, containing otoliths (calcium crystals), register linear acceleration and are responsible for assessing the Gravitational Insecurity Scale.

## Pain Gating and Tactile Defensiveness
![Pain gating](resource:assets/images/tactile.png)
In the application, we assess tactile defensiveness (intolerance to clothes, hair washing). It results from an uninhibited A-delta and C defense system. We use proprioceptive stimulation (pressure) to treat it. Thick, fast sensory A-beta fibers conduct strong pressure, outpacing pain information from thin fibers. A-beta fibers stimulate inhibitory interneurons in the spinal cord, physically closing the flow of pain impulses to the brain.
