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Our perception of time depends on multiple psychological processes that allow us to anticipate events. In this study, we used event-related functional magnetic resonance imaging (fMRI) to differentiate neural systems involved in formulating representations of time from processes associated with making decisions about their duration. A time perception task(More)
The objectives of the present study were to evaluate the impact of a single bout of high-intensity aerobic exercise on 1) long-term potentiation (LTP)-like neuroplasticity via response to paired associative stimulation (PAS) and 2) the temporal and spatial components of sequence-specific implicit motor learning. Additionally, relationships between(More)
Behaviours that appear to depend on processing temporal information are frequently disrupted after cerebellar damage. The present study examined the role of the cerebellum in explicit timing and its relationship to other psychological processes. We hypothesized that if the cerebellum regulates timekeeping operations then cerebellar damage should disrupt the(More)
OBJECTIVES Children with developmental coordination disorder (DCD) struggle to learn new motor skills, demonstrating more variable performance than typically developing (TD) children. The purpose of this study was to determine whether patterns of brain activity differed between children with and without DCD while performing a motor task. METHODS Using(More)
Our main aim was to determine whether individuals with stroke that affected the basal ganglia, organized movement sequences into chunks in the same fashion as neurologically intact individuals. To address this question, we compared motor response times during the performance of repeated sequences that were learned, and thus may be planned in advance, with(More)
After stroke, many individuals experience persistent motor impairments as well as altered patterns of sleep. Therefore, examining the role of sleep in motor skill learning following stroke is a critical issue. Other learning variables, such as type of instruction, may interact with sleep to influence sleep-dependent motor learning. Forty individuals with(More)
BACKGROUND AND PURPOSE It is not known whether individuals with Parkinson disease (PD) can practice movements mentally. Before this question can be addressed, a reliable imagery assessment tool must be established. The recently developed Kinesthetic and Visual Imagery Questionnaire (KVIQ) is valid for non-disabled individuals and individuals with stroke. We(More)
UNLABELLED Lang CE, MacDonald JR, Reisman DS, Boyd L, Jacobson Kimberley T, Schindler-Ivens SM, Hornby TG, Ross SA, Scheets PL. Observation of amounts of movement practice provided during stroke rehabilitation. OBJECTIVE To investigate how much movement practice occurred during stroke rehabilitation, and what factors might influence doses of practice(More)
Children with developmental coordination disorder (DCD) have difficulty in learning new motor skills. At present, it is not known whether these children employ a different set of brain regions than typically developing (TD) children during skilled motor practice. Using functional magnetic resonance imaging, we mapped brain activity associated with skilled(More)
Learning and memory are sub-served by two interrelated systems - explicit and implicit. Explicit memory involves facts, while one form of implicit memory involves perceptual-motor processes. The purpose of this series of experiments was to investigate the ability of individuals with stroke-related brain damage to demonstrate implicit motor-sequence learning(More)