Cognitive and behavioural flexibility permit the appropriate adjustment of thoughts and
behaviours in response to changing environmental demands. Brain mechanisms enabling …

Cognitive flexibility, the readiness with which one can selectively switch between mental
processes to generate appropriate behavioral responses, develops in a protracted manner …

Abstract “The Scaffolding Theory of Aging and Cognition (STAC)”, proposed in 2009, is a
conceptual model of cognitive aging that integrated evidence from structural and functional …

We consider between-subject variance in brain function as data rather than noise. We
describe variability as a natural output of a noisy plastic system (the brain) where each …

Modern neuroimaging techniques provide us with unique views on brain structure and
function; ie, how the brain is wired, and where and when activity takes place. Data acquired …

Neuroscientists have long observed that brain activity is naturally variable from moment-to-
moment, but neuroimaging research has largely ignored the potential importance of this …

Resting-state networks (RSNs), which have become a main focus in neuroimaging research,
can be best simulated by large-scale cortical models in which networks teeter on the edge of …

Graph theory-based analysis has been widely employed in brain imaging studies, and
altered topological properties of brain connectivity have emerged as important features of …

This paper presents methods to analyze functional brain networks and signals from graph
spectral perspectives. The notion of frequency and filters traditionally defined for signals …

Bilingual older adults typically have better performance on tasks of executive control (EC)
than do their monolingual peers, but differences in brain activity due to language experience …