Schizophrenia Clinical Trial
Official title:
Neuromodulation of Social Cognitive Circuitry in People With Schizophrenia Spectrum Disorders
In this study, the investigators will be examining the effects of repetitive transcranial magnetic stimulation (rTMS) and intermittent theta burst stimulation (iTBS) on social cognitive impairments in individuals with schizophrenia spectrum disorders. Participants will be chosen by chance to receive either active rTMS stimulation, active iTBS stimulation, sham rTMS, or sham iTBS. The investigators predict that active 10Hz and iTBS stimulation will improve social cognitive impairments compared to sham stimulation. We aim to identify which type of active stimulation is most effective at inducing changes social cognition brain circuitry and secondarily which type of active stimulation is best tolerated and most effective at inducing changes in social cognitive performance.
This study is a randomized, double blind, sham controlled study which aims to use repetitive transcranial magnetic stimulation (rTMS), a form of neuromodulation, to target the neural circuitry of social cognitive (SCog) impairments in people with Schizophrenia Spectrum Disorders. We will randomize 60 people with SSDs to three groups: 20 to a conventional form of rTMS (i.e. 10 Hz rTMS); 20 to intermittent theta burst stimulation (iTBS); and 20 to either sham 10Hz rTMS stimulation or sham iTBS. We will determine whether these treatments can change the functional connectivity of key SCog brain circuits by targeting a brain region known as the dorsomedial prefrontal cortex (DMPFC). Since each person's anatomical and functional brain profile is slightly different, we will optimize the orientation and location of coil placement in each individual. Overall, our proposal follows a target engagement framework, including specifics regarding testing brain stimulation parameters (i.e., rTMS vs. iTBS) and individualizing coil placement for optimal targeting. We anticipate that active 10 Hz rTMS or iTBS will demonstrate target engagement compared to sham, and potentially ameliorate SCog deficits in people with SSDs. Our primary goal is to identify which treatment best induces change in SCog brain circuitry and secondarily which treatment is best tolerated and induces changes in social cognitive performance. ;
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