Publications by authors named "J S Gagnon"
Blood-based biomarkers for Alzheimer's disease (AD) pathology have been intensively investigated as markers for AD-related neurodegeneration. Comorbid AD pathology is common in dementia with Lewy bodies (DLB). Accordingly, we hypothesized that plasma biomarkers associated with AD pathology might be useful to predict DLB in a cohort of idiopathic/isolated REM sleep behavior disorder (iRBD), an incipient synucleinopathy.
View Article and Find Full Text PDFIsolated rapid eye movement sleep behavior disorder is a prodrome of α-synucleinopathies. Using positron emission tomography, we assessed changes in Parkinson's disease-related motor and cognitive metabolic networks and caudate/putamen dopaminergic input in a 4-year longitudinal imaging study of 13 male subjects with this disorder. We also correlated times to phenoconversion with baseline network expression in an independent validation sample.
View Article and Find Full Text PDFImportance: The American Academy of Pediatrics (AAP) higher-risk criteria for brief resolved unexplained events (BRUE) have a low positive predictive value (4.8%) and misclassify most infants as higher risk (>90%). New BRUE prediction rules from a US cohort of 3283 infants showed improved discrimination; however, these rules have not been validated in an external cohort.
View Article and Find Full Text PDFArticle Synopsis
- The study investigates how individuals infer mental states, focusing on the cognitive processes involved in attributing intentionality, particularly in violent offenders compared to non-offenders.
- Using a measure called gaze transition entropy (GTE), it assesses how social cues influence the attribution of intent.
- Results indicate that violent offenders exhibit lower entropy, suggesting they may struggle more with attentional processes and are more prone to hostile interpretations in ambiguous situations.