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"Electrophysiological correlates of reinforcement learning in young people with Tourette syndrome with and without co-occurring ADHD symptoms" \cite{27103231}.  \cite{27242551} | CBT's effect on ERPs in patients with tic disorders or body-focused repetitive behaviors  ### Neuroimaging studies  A structural brain MRI study in 103 children with TS, age 7–17 years, and 103 matched control subjects, found greater gray matter volume in TS in the posterior thalamus, hypothalamus and midbrain, and decreased white matter volume in orbital prefrontal and anterior cingulate cortex \cite{27777415}. Structural abnormalities in these regions was hypothesized to influence somatosensory processing, decision making or reinforcement learning. Eddy and colleagues continued their research using theory of mind (ToM) approaches to TS, reporting on an fMRI study involving a task that required the subject to infer another person's decisions \cite{27424063}. TS subjects showed overall lower responses to the ToM task and to a control task, but also in several regions a lower increase with the ToM task compared to the control task. These regions included the posterior cingulate, right angular gyrus and right amygdala, regions involved in previous ToM studies in people without tics. Group differences correlated with various symptom severity measures, including temporoparietal junction activation correlating strongly with premonitory urge severity.  | **Title** | **Comment** |  |:----------|:------------|  | \cite{Greene_striatal_fcMRI} | Multivariate pattern classification of pediatric Tourette syndrome using functional connectivity MRI |  | \cite{27242551} | CBT's effect on ERPs in patients with tic disorders or body-focused repetitive behaviors |  | \cite{27777415} | TAA Consortium VBM results |  | \cite{27424063} | Temporo-parietal dysfunction in TS in a theory of mind fMRI study |   | \cite{27458389} | Regional CBF with active DBS in GPi, DBS in medial thalamus, sham stimulation, and no stimulation, in 5 patients with TS. |  | \cite{27799898} | GPi fcMRI in TS |