A fundamental feature of information processing dysfunction in psychosis is the inability of these patients to screen out, inhibit, filter or gate extranous stimuli and to attent selectively to salient features of the environment. Gating deficients may cause these subjects to become overloaded with excessive extroceptive and introceptive stimuli, which in turn could lead to a breakdown in cognitive integrity and difficulty in distinguishing self from nonself.
Brain mechanisms of hallucinogens and entactogens
by Franz X. Vollenweider
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3181663/
Theories regarding the neuronal basis of the symptomatology of schizophrenic psychoses have often suggested that deficits in early information processing may underlie the diversity of psychotic symptoms and cognitive disturbances observed in the group of schizophrenias. Such theories posit that a fundamental feature of information processing dysfunction in psychosis is the inability of these patients to screen out, inhibit, filter, or gate extraneous stimuli and to attend selectively to salient features of the environment. Gating deficits may cause these subjects to become overloaded with excessive exteroceptive and interoceptive stimuli, which, in turn, could lead to a breakdown of cognitive integrity and difficulty in distinguishing self from nonself.