I haven't read any of your previous posts on the board(s).
Further to Waybread's comments above, aspects between Moon-Mercury-Saturn-Uranus have been observed to have strong associations with those orders on the autism spectrum.
ADD often sees the inclusion of a harsh Mars, ADHD(high functioning) can include Jupiter.
Saturn is actually out of orb to be included in the 'spectrum' observations. It does form a square aspect to Jupiter, which has found associations with bi-polar tendencies.
When referring to the nervous system, are you meaning mentally (Mercury), functionally (Uranus), or physically (Ascendant)?
Mercury-Neptune-Sun in Capricorn can see the issue of rationality versus irrationality of thought, yet not necessarily as a functional disorder. Giving fantasy a realistic and structural expression through the written word, drawings (Mercury),film, photography, music, art forms( Neptune), individual ideas (Sun), is an excellent manner to use the energies in their most creative and positive ways. Allowing unrealistic fantasy to control and dissove (Neptune) the concentration (Capricorn) of spirit (Sun) and mind (Mercury) mind isn't.
Mercury-Moon-Uranus, especially under influence of the 4th house, can take on more of an automatic behaviour pattern (Moon) that has control of rational thought (Mercury in Capricorn) and unusual ideas (Uranus)beyond the rational norm. Great for inventors and geniuses of the future (Uranus) alike, who follow their own ideas that seem to rise up (Sagittarius) from within (4th house) and suddenly take form and shape in their mind (Mercury) to bring about change to old patterns; not so good for those who tend to live with/through the memory of those old patterns and don't allow any change of mind to occur. Uncontrolled functions of the limbs could be a result.
Ascendant Rising (personality and physical constitution) is in Virgo, ruler Mercury. Aquarius (trad. ruler Saturn, mod. ruler Uranus) is on 6th house cusp of physical ailments. There is no aspect between Mercury-Saturn, yet the albeit out of sign but within orb conjunction between Mercury-Uranus.
As mentioned above, could this coincide with a restrictive functioning of the limbs, possible mechanical (Virgo) aid (Neptune) to enable movement?
I study the effect of an astrological point called Black Moon Lilith. Its MEAN position
lilth
in the natal chart is on 4* Cancer in the 10th house, from where it opposes Mercury-Neptune-Sun. It has been observed to have very strong associations with images created of experiences from childhood. Aspects with the Sun have been found relevant regarding the biological/ pseudo father image(s) which one has to confront, yet positively also the latent talent within one's self just waiting to surface when any contention has been dealt with and laid to rest.
MEAN Lilith in Cancer is very strong in the imaginative tendencies, especially concerning what was thought to be extinct, yet isn't.
Could any deficiency you envision within yourself be of a purely alternate way of thinking mental nature?