Phonological:

The system of contrastive relationships among the speech sounds that constitute the fundamental components of a language.

The arcuate fasciculus:

Is a bundle of axons that forms part of the superior longitudinal  fasciculus, an association fiber tract. The arcuate bidirectionally connects caudal temporal cortex and inferior parietal cortex to locations in the frontal lobe.

Aprosexia:
Is an abnormal inability to pay attention, characterized by a near-complete indifference to everything.