scholarly journals Effects of a Rhodiola rosea extract on mental resource allocation and attention: An event‐related potential dual task study

2020 ◽  
Vol 34 (12) ◽  
pp. 3287-3297
Author(s):  
Tina Koop ◽  
Angelika Dienel ◽  
Marcus Heldmann ◽  
Thomas F. Münte
Keyword(s):  
Resource Allocation ◽  
Dual Task ◽  
Event Related Potential ◽  
Rhodiola Rosea ◽  
Rhodiola Rosea Extract

Anti-fatigue effects of Rhodiola rosea extract

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381 ◽  
Author(s):  
SY Choi
Keyword(s):  
Rhodiola Rosea ◽  
Rhodiola Rosea Extract

scholarly journals The impact of predictability on dual-task performance and implications for resource-sharing accounts

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Laura Broeker ◽  
Harald Ewolds ◽  
Rita F. de Oliveira ◽  
Stefan Künzell ◽  
Markus Raab
Keyword(s):  
Resource Allocation ◽  
Task Performance ◽  
Dual Task ◽  
Resource Sharing ◽  
Visual Information ◽  
Allocation Policy ◽  
Capacity Sharing ◽  
Dual Task Performance ◽  
Sound Sequence ◽  
The Impact

AbstractThe aim of this study was to examine the impact of predictability on dual-task performance by systematically manipulating predictability in either one of two tasks, as well as between tasks. According to capacity-sharing accounts of multitasking, assuming a general pool of resources two tasks can draw upon, predictability should reduce the need for resources and allow more resources to be used by the other task. However, it is currently not well understood what drives resource-allocation policy in dual tasks and which resource allocation policies participants pursue. We used a continuous tracking task together with an audiomotor task and manipulated advance visual information about the tracking path in the first experiment and a sound sequence in the second experiments (2a/b). Results show that performance predominantly improved in the predictable task but not in the unpredictable task, suggesting that participants did not invest more resources into the unpredictable task. One possible explanation was that the re-investment of resources into another task requires some relationship between the tasks. Therefore, in the third experiment, we covaried the two tasks by having sounds 250 ms before turning points in the tracking curve. This enabled participants to improve performance in both tasks, suggesting that resources were shared better between tasks.

Does Secondary Task Measure Outcome Conflict or Resource Allocation?

1992 ◽  
Vol 36 (18) ◽  
pp. 1398-1402
Author(s):  
Pamela S. Tsang ◽  
Tonya L. Shaner
Keyword(s):  
Resource Allocation ◽  
Task Performance ◽  
Dual Task ◽  
Secondary Task ◽  
Tracking Error ◽  
Memory Task ◽  
Primary Task ◽  
Memory Probe ◽  
Temporal Predictability ◽  
Task Measure

The secondary task technique was used to test two alternative explanations of dual task decrement: outcome conflict and resource allocation. Subjects time-shared a continuous tracking task and a discrete Sternberg memory task. The memory probes were presented under three temporal predictability conditions. Dual task performance decrements in both the tracking and memory tasks suggested that the two tasks competed for some common resources, processes, or mechanisms. Although performance decrements were consistent with both the outcome conflict and resource allocation explanations, the two explanations propose different mechanisms by which the primary task could be protected from interference from the concurrent secondary task. The primary task performance could be protected by resource allocation or by strategic sequencing of the processing of the two tasks in order to avoid outcome conflict. In addition to examining the global trial means, moment-by-moment tracking error time-locked to the memory probe was also analyzed. There was little indication that the primary task was protected by resequencing of the processing of the two tasks. This together with the suggestion that predictable memory probes led to better protected primary task performance than less predictable memory probes lend support for the resource explanation.

scholarly journals Vocal threat enhances visual perception as a function of attention and sex

2019 ◽  
Vol 14 (7) ◽  
pp. 727-735 ◽  
Author(s):  
Annett Schirmer ◽  
Maria Wijaya ◽  
Esther Wu ◽  
Trevor B Penney
Keyword(s):  
Visual Perception ◽  
Dual Task ◽  
Visual Processing ◽  
Event Related Potential ◽  
Visual Task ◽  
Single Task ◽  
Potential Study ◽  
Visual Enhancement ◽  
Task Block ◽  
Task Irrelevant

Abstract This pre-registered event-related potential study explored how vocal emotions shape visual perception as a function of attention and listener sex. Visual task displays occurred in silence or with a neutral or an angry voice. Voices were task-irrelevant in a single-task block, but had to be categorized by speaker sex in a dual-task block. In the single task, angry voices increased the occipital N2 component relative to neutral voices in women, but not men. In the dual task, angry voices relative to neutral voices increased occipital N1 and N2 components, as well as accuracy, in women and marginally decreased accuracy in men. Thus, in women, vocal anger produced a strong, multifaceted visual enhancement comprising attention-dependent and attention-independent processes, whereas in men, it produced a small, behavior-focused visual processing impairment that was strictly attention-dependent. In sum, these data indicate that attention and listener sex critically modulate whether and how vocal emotions shape visual perception.

scholarly journals Attentional resource allocation and swallowing safety in Parkinson's disease: A dual task study

2014 ◽  
Vol 20 (4) ◽  
pp. 439-443 ◽  
Author(s):  
Michelle S. Troche ◽  
Michael S. Okun ◽  
John C. Rosenbek ◽  
Lori J. Altmann ◽  
Christine M. Sapienza
Keyword(s):  
Parkinson’S Disease ◽  
Resource Allocation ◽  
Parkinson's Disease ◽  
Dual Task ◽  
Attentional Resource
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