A Workflow for Continuous Performance Testing in Smart Buildings

2018 ◽  
pp. 54-59 ◽  
Author(s):  
Elena Markoska ◽  
Sanja Lazarova-Molnar
Keyword(s):  
Performance Testing ◽  
Continuous Performance ◽  
Smart Buildings ◽  
Continuous Performance Testing

scholarly journals Denser Retinal Microvascular Network Is Inversely Associated With Behavioral Outcomes and Sustained Attention in Children

2021 ◽  
Vol 12 ◽  
Author(s):  
Eline B. Provost ◽  
Tim S. Nawrot ◽  
Luc Int Panis ◽  
Arnout Standaert ◽  
Nelly D. Saenen ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Sustained Attention ◽  
Evaluation System ◽  
Behavioral Outcomes ◽  
Performance Testing ◽  
Retinal Vessel ◽  
Sensitivity Analyses ◽  
Continuous Performance ◽  
Microvascular Network ◽  
Retinal Microvasculature

Changes in geometry of the retinal microvascular network, including vessel width, vessel density, and tortuosity, have been associated with neurological disorders in adults. We investigated metrics of the retinal microvasculature in association with behavior and cognition in 8- to 12-year-old children. Digital fundus images of 190 children (48.2% girls, mean age 9.9 years) were used to calculate retinal vessel diameters, fractal dimension, lacunarity, and tortuosity. Parents filled out a Strengths and Difficulties Questionnaire (SDQ) for behavioral screening. Cognitive performance testing included a computerized version of the Stroop test (selective attention), the Continuous Performance (sustained attention), the Digit-Symbol (visual scanning and information-processing speed) and the Pattern Comparison (visuospatial analytic ability) tests from the Neurobehavioral Evaluation System (NES3) battery. Retinal vessel geometry was significantly associated with the SDQ problem score, which increased with 1.1 points (95% CI: 0.3 to 1.9 points) per interquartile (IQR) increment in retinal fractal dimension, and decreased 1.4 points (95% CI: −2.4 to −0.4 points) or decreased 1.0 points (95% CI: −2.1 to 0.1 points) per IQR increment in retinal vascular lacunarity or tortuosity, respectively. Sensitivity analyses showed that results were driven by the hyperactivity/inattention and conduct problem scales of the SDQ. Correspondingly, mean reaction time on the Continuous Performance test increased by 11 ms (95% CI: 4.4 to 17.6 ms) with an IQR increase in fractal dimension. The results indicate that a denser retinal microvascular network, exemplified by a higher fractal dimension and lower lacunarity, are inversely associated with behavioral outcomes and sustained attention in children.

Current Practice of Neurofeedback: Where We Are and How We Got There

Biofeedback ◽  
2016 ◽  
Vol 44 (4) ◽  
pp. 181-205
Author(s):  
Michael Thompson ◽  
Lynda Thompson
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Single Channel ◽  
Performance Testing ◽  
Quarter Century ◽  
New Developments ◽  
The Past ◽  
Effective Interventions ◽  
Assessment Procedures ◽  
Continuous Performance Testing

This article tracks the evolution of the practice of neurofeedback over the past quarter century from the perspective of services offered at a private clinic. It describes why and how the authors changed their practices from interventions including medication, psychotherapy, and tutoring to biofeedback interventions. Their evolving practices required complex assessments including single- and two-channel quantitative electroencephalograph (QEEG) and later 19-channel QEEG combined with evoked potentials, heart rate variability, continuous performance testing, and neuropsychological assessment. The article stresses that interventions require a multimodal approach. The neuroanatomical rationale for combining neurofeedback and heart rate variability (HRV) training is provided as well as a discussion of how a systems theory of neural synergy helps explain how neurofeedback influences brain networks. Assessment procedures are described in some detail because that information is used to develop effective interventions that typically combine neurofeedback (single-channel or LORETA Z-score neurofeedback, as indicated) with HRV training. The authors stress using evidence-based approaches, basing intervention on assessment, and keeping current with new developments in applied neuroscience.

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