An Integrated Neurophysiological Approach Toward the Early Detection of Psychiatric Disorders

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Conditions studied: Schizophrenia Disorders

In brief

Schizophrenia (SCZ) is a severe neuropsychiatric disorder characterized by cognitive decline, social withdrawal, and positive symptoms such as hallucinations and delusions. Research suggests that SCZ and schizotypy exist along a continuum, with shared structural and behavioral abnormalities, the latter of which encompass the sensory and perceptual domain, often in the form of altered multisensory integration, as seen in tasks like the Sound-Induced Flash Illusion (SIFI). Individuals with schizotypal traits or SCZ show enlarged temporal binding windows (TBW) of cross-modal integration, affecting perceptual accuracy and multisensory judgments. However, whether these deficits stem from overactive top-down modulation or weakened bottom-up sensory precision remains unclear. The current study seeks to address these questions, by asking participants (healthy individuals screened as for their schizotypal traits, and patients suffering from SCZ) to complete a modified version of the SIFI, as well as an audiovisual temporal order judgment (TOJ) task. Cross-modal performance will be assessed via signal detection theory (SDT) metrics and psychometric modeling to estimate individual TBWs, thereby assaying audiovisual processing abilities along the schizotypal continuum

Key facts

Study ID
NCT06886945
Run by
IRCCS Centro San Giovanni di Dio Fatebenefratelli
People needed
75
Starts
2024-04-09
Expected to finish
2025-10-01
Last updated by the study team
2025-03-20

Who can join

Age: 18 and older, up to 50. Sex: any. Healthy volunteers: accepted.

Where it is running

Full record on ClinicalTrials.gov

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