Open Access. Powered by Scholars. Published by Universities.®
- Keyword
- Publication
- Publication Type
- File Type
Articles 1 - 4 of 4
Full-Text Articles in Health Psychology
Differential Effects Of Stimulus Context In Sensory Processing: Effets Différentiels Du Contexte De Présentation Des Stimuli Sur Les Processus Perceptifs, Yoav Arieh, Lawrence E. Marks
Differential Effects Of Stimulus Context In Sensory Processing: Effets Différentiels Du Contexte De Présentation Des Stimuli Sur Les Processus Perceptifs, Yoav Arieh, Lawrence E. Marks
Department of Psychology Faculty Scholarship and Creative Works
Stimulus contexts in which different intensity levels are presented to two sensory–perceptual channels can produce differential effects on perception: Perceived magnitudes are depressed in whichever channel received the stronger stimuli. Context differentially can affect loudness at different sound frequencies or perceived length of lines in different spatial orientations. Reported in the hearing, vision, haptic touch, taste, and olfaction, differential context effects (DCEs) are a general property of perceptual processing. Characterizing their functional properties and determining their underlying mechanisms are essential both to fully understanding sensory and perceptual processes and to properly interpreting sensory measurements obtained in applied as well …
Age And Physical Activity Influences On Action Monitoring During Task Switching, Jason R. Themanson, Charles H. Hillman, John J. Curtin
Age And Physical Activity Influences On Action Monitoring During Task Switching, Jason R. Themanson, Charles H. Hillman, John J. Curtin
Jason R. Themanson, Ph.D
Behavioral and neuroelectric indices of action monitoring were compared for 53 high and low physically active older (60–71 years) and younger (18–21 years) adults during a task-switching paradigm in which they performed a task repeatedly or switched between two different tasks. The error-related negativity (ERN) of a response-locked event-related brain potential (ERP) and behavioral measures of response speed and accuracy were measured during the heterogeneous condition (switching randomly between two tasks) of the switch task. Results indicated that older adults exhibited a greater relative slowing in RT during heterogeneous blocks and smaller ERN amplitude compared to younger adults. Additionally, physical …
The Effects Of Aging On Controlled Attention And Conflict Processing In The Stroop Task, Robert West
The Effects Of Aging On Controlled Attention And Conflict Processing In The Stroop Task, Robert West
Robert West
Recent computational modeling and behavioral work indicate that age-related declines in the ability to represent task context may contribute to disruptions of working memory and selective attention in older adults. However, it is unclear whether age-related declines in context processing arise from a disruption of the encoding or maintenance of task context and how age-related declines in context processing interact with mechanisms supporting conflict detection and resolution processes contributing to efficient selection of task-relevant information. This study examines the effects of aging on the neural correlates of context and conflict processing in the Stroop task using event-related brain potentials (ERPs). …
Cardiorespiratory Fitness And Acute Aerobic Exercise Effects On Neuroelectric And Behavioral Measures Of Action Monitoring, Jason R. Themanson, Charles H. Hillman
Cardiorespiratory Fitness And Acute Aerobic Exercise Effects On Neuroelectric And Behavioral Measures Of Action Monitoring, Jason R. Themanson, Charles H. Hillman
Jason R. Themanson, Ph.D
Cardiorespiratory fitness and acute aerobic exercise effects on cognitive function were assessed for 28 higher- and lower-fit adults during a flanker task by comparing behavioral and neuroelectric indices of action monitoring. The error-related negativity, error positivity, and N2 components, as well as behavioral measures of response speed, accuracy, and post-error slowing were measured following a 30-minute acute bout of treadmill exercise or following 30-minutes of rest. A graded maximal exercise test was used to measure cardiorespiratory fitness by assessing maximal oxygen uptake. Results indicated that higher-fit adults exhibited reduced error-related negativity amplitude, increased error positivity amplitude, and increased post-error response …