Discovery of disrupted sustained attention and altered functional connectivity in far-from-onset Huntington's disease gene-expanded young adults. - Langley C; Leocadi M; Hobbs NZ; Farag M; Murphy MJ; Fayer K; Scahill RI; Rowe JB; Robbins TW; Tabrizi SJ; Sahakian BJ (Alzheimer's & dementia : the journal of the Alzheimer's Association, 2026)