Introduction
Schizophrenia spectrum disorders (SSDs) are characterized by abnormal sensory and perceptual processing. An enduring question is the puzzling dichotomy between schizophrenia patients’ subjective sensory experiences which contrast with neurobiological and behavioral measures of sensory responses. Individuals with SSD tend to exhibit hyporeactivebehavioral responses such as higher, less sensitive, thresholds in auditory and visual discrimination tasks (Ramsay et al., 2020; Todd et al., 2003). Indeed, hyporeactivity to sensory input is a distinguishing trait of schizophrenia and a putative biomarker of disease progression (Javitt et al., 2018; Koshiyama et al., 2020). However, the subjective experience of SSD individuals is not captured by the hyporeactive response account. Instead, people with schizophrenia and SSD report sensory overload, or sensory flooding, consistent with sensory hyperexcitability (Bunney et al., 1999; Micoulaud-Franchi et al., 2012). These conflicting observations describe a mismatch between objective and subjective behavioral responses to sensory stimuli in individuals with SSD.