A study led by researchers at Children’s Hospital Los Angeles demonstrates what lead investigator Bradley Peterson, MD, calls “a critical mass of evidence” of a common underlying lifelong vulnerability in both children and adults who stutter. They discovered that regional cerebral blood flow is reduced in the Broca’s area – the region in the frontal lobe of the brain linked to speech production – in persons who stutter. More severe stuttering is associated with even greater reductions in blood flow to this region.
The research is in Human Brain Mapping. (full access paywall)
Researchers at the University of Barcelona and the Montreal Neurological Institute and Hospital of McGill University have discovered that people with musical anhedonia showed reduced functional connectivity between cortical regions responsible for processing sound and subcortical regions related to reward.
The research is in PNAS. (full access paywall)