The availability of neuroimaging technology has spurred a marked increase in the human
cognitive neuroscience literature, including the study of cognitive ageing. Although there is a …

A hypothetical model of Alzheimer's disease (AD) as a uniquely human brain disorder
rooted in its exceptional process of myelination is presented. Cortical regions with the most …

Older adults typically show weaker functional connectivity (FC) within brain networks
compared with young adults, but stronger functional connections between networks. Our …

Despite growing recognition that attention fluctuates from moment-to-moment during
sustained performance, prevailing analysis strategies involve averaging data across …

Increased intraindividual variability (IIV) is a hallmark of disorders of attention. Recent work
has linked these disorders to abnormalities in a “default mode” network, comprising brain …

Cognitive aging is a flourishing area of research. A significant amount of new data, a number
of new theoretical notions, and many new research issues have been generated in the past …

Age differences in three basic types of variability were examined: variability between
persons (diversity), variability within persons across tasks (dispersion), and variability within …

Intra-individual variability reflects a transient, within-person change in behavioral
performance. It is a common component of aging-related cognitive decline and the …

The authors bring together approaches from cognitive and individual differences psychology
to model characteristics of reaction time distributions beyond measures of central tendency …

Molecular-imaging studies of dopaminergic neurotransmission measure biomarkers of
dopamine (DA), such as the DA transporter and D1 and D2 receptor densities in the living …