Age-differences in the time course of stream segregation in informational masking of speech by speech

2012 ◽  
Vol 131 (4) ◽  
pp. 3342-3342 ◽  
Author(s):  
Bruce A. Schneider ◽  
Payam Ezzatian ◽  
Liang Li ◽  
M Kathleen Pichora-Fuller
Keyword(s):  
Age Differences ◽  
Time Course ◽  
Stream Segregation ◽  
Informational Masking

Informational masking with speech-on-speech intelligibility: Pupil response and time-course of learning

2021 ◽  
Vol 149 (4) ◽  
pp. 2353-2366
Author(s):  
Niek J. Versfeld ◽  
Sisi Lie ◽  
Sophia E. Kramer ◽  
Adriana A. Zekveld
Keyword(s):  
Speech Intelligibility ◽  
Time Course ◽  
Informational Masking ◽  
Pupil Response

Release from informational masking by auditory stream segregation: perception and its neural correlate

2020 ◽  
Vol 51 (5) ◽  
pp. 1242-1253 ◽  
Author(s):  
Lena‐Vanessa Dolležal ◽  
Sandra Tolnai ◽  
Rainer Beutelmann ◽  
Georg M. Klump
Keyword(s):  
Stream Segregation ◽  
Informational Masking ◽  
Neural Correlate ◽  
Auditory Stream ◽  
Auditory Stream Segregation

scholarly journals Age Differences in the Time Course and Magnitude of Changes in Circulating Neuropeptides After Pain Evocation in Humans

2017 ◽  
Vol 18 (9) ◽  
pp. 1078-1086 ◽  
Author(s):  
Joseph L. Riley ◽  
Yenisel Cruz-Almeida ◽  
Margarete C. Dasilva Ribeiro ◽  
Corey B. Simon ◽  
Nathan R. Eckert ◽  
...  
Keyword(s):  
Age Differences ◽  
Time Course

scholarly journals Adult Age Differences in the Time Course of Inhibition of Return

2003 ◽  
Vol 58 (5) ◽  
pp. P256-P259 ◽  
Author(s):  
A. D. Castel ◽  
A. L. Chasteen ◽  
C. T. Scialfa ◽  
J. Pratt
Keyword(s):  
Age Differences ◽  
Time Course ◽  
Inhibition Of Return ◽  
Adult Age ◽  
Adult Age Differences

Age Differences in the Functional Field-of-View while Driving: A Preliminary Simulator-Based Study

1998 ◽  
Vol 42 (2) ◽  
pp. 176-180 ◽  
Author(s):  
Frank Schieber ◽  
Joanne M. Benedetto
Keyword(s):  
Age Differences ◽  
Time Course ◽  
Motor Vehicle ◽  
Field Of View ◽  
Tunnel Vision ◽  
Novel Approach ◽  
Current Implementation ◽  
Stimulus Target ◽  
Functional Field Of View ◽  
A New Technique

This study represents an initial exploration of a new technique developed to permit the assessment of age differences in the “useful field of view” (Ball, et al., 1993) while simultaneously operating a motor vehicle. Due to necessary safety precautions, this novel approach was first evaluated using a simulated rather than a real-world driving context. Data was collected from seventeen young (mean age = 19.8) and eight older (mean age = 72.9) adult volunteers. Preliminary data analyses indicated that the technique was sensitive to “tunnel vision” effects resulting from experimentally induced limitations in the time available to process stimulus target “onset” events in the visual periphery. The magnitude and time-course of these effects differed markedly as a function of the age of the observer. Shortcomings in the current implementation of the technique and planned improvements are also discussed.

Age Differences in Deactivation: A Link to Cognitive Control?

2007 ◽  
Vol 19 (6) ◽  
pp. 1021-1032 ◽  
Author(s):  
Jonas Persson ◽  
Cindy Lustig ◽  
James K. Nelson ◽  
Patricia A. Reuter-Lorenz
Keyword(s):  
Older Adults ◽  
Cognitive Control ◽  
Age Differences ◽  
Time Course ◽  
Word Reading ◽  
Generation Task ◽  
Default Mode ◽  
Temporal Properties ◽  
Age Related ◽  
Increasing Demand

The network of regions shown by functional imaging studies to be deactivated by experimental tasks relative to nominally more passive baselines (task < baseline) may reflect processes engaged during the resting state or “default mode.” Deactivation may result when attention and resources are diverted from default-mode processes toward task processes. Aging is associated with altered patterns of deactivation which may be related to declining resources, difficulties with resource allocation, or both. These possibilities predict that greater task demand, which increases deactivation levels in younger adults, should exacerbate age-related declines in allocating resources away from the default mode. The present study investigated the magnitude and temporal properties of deactivations in young and older adults during tasks that varied in their demand for cognitive control. Two versions of a verb generation task that varied in their demand for selection among competing alternatives were compared to word reading and a fixation baseline condition. Consistent with our hypothesis, greater deactivations were found with increasing demand. Young and older adults showed equivalent deactivations in the minimal selection condition. By contrast, age differences in both the magnitude and time course of deactivation increased with selection demand: Compared to young adults', older adults' deactivation response showed less sensitivity to demand. Demand-related changes in deactivation magnitude correlated with performance changes, suggesting that individual and group differences in deactivation have functional significance.

Ultrastructural Changes of the Symbiotic Chlorella-Like Alga Isolated from Hydra Viridis

1982 ◽  
Vol 40 ◽  
pp. 320-321
Author(s):  
K.W. Lee ◽  
R.H. Meints ◽  
D. Kuczmarski ◽  
J.L. Van Etten
Keyword(s):  
Time Course ◽  
Reciprocal Cross ◽  
Ultrastructural Level ◽  
Ultrastructural Changes ◽  
Symbiotic Relationship ◽  
Cell Recognition ◽  
Green Hydra ◽  
Different Strains ◽  
Hydra Viridis

The physiological, biochemical, and ultrastructural aspects of the symbiotic relationship between the Chlorella-like algae and the hydra have been intensively investigated. Reciprocal cross-transfer of the Chlorellalike algae between different strains of green hydra provide a system for the study of cell recognition. However, our attempts to culture the algae free of the host hydra of the Florida strain, Hydra viridis, have been consistently unsuccessful. We were, therefore, prompted to examine the isolated algae at the ultrastructural level on a time course.

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