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Auditory verbal hallucinations (AVHs) have been associated with deficits
in auditory and speech-related networks. However, the resting-state
cerebral blood flow (CBF) alterations specific to AVHs in schizophrenia
To explore AVH-related CBF alterations in individuals with
In total, 35 individuals with schizophrenia with AVHs, 41 individuals
with schizophrenia without AVHs and 50 controls underwent arterial spin
labelling magnetic resonance imaging. The CBF differences were voxel-wise
compared across the three groups.
We found AVH-specific CBF increase in the right superior temporal gyrus
and caudate, and AVH-specific CBF decrease in the bilateral occipital and
left parietal cortices. We also observed consistent CBF changes in both
schizophrenia subgroups (i.e. those with and without AVHs) including
decreased CBF in the bilateral occipital regions, the left lateral
prefrontal and insular cortices, and the right anterior cingulate cortex
and increased CBF in the bilateral lateral temporal regions and putamen,
the left middle cingulate cortex and the right thalamus.
The AVH-specific CBF increases in the auditory and striatal areas and CBF
reductions in the visual and parietal areas suggest that there exists a
CBF redistribution associated with AVHs.
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