The Experts below are selected from a list of 7398 Experts worldwide ranked by ideXlab platform
Xin Zeng - One of the best experts on this subject based on the ideXlab platform.
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combined scores from the encephalapp Stroop Test number connection Test b and serial dotting Test accurately identify patients with covert hepatic encephalopathy
Clinical Gastroenterology and Hepatology, 2019Co-Authors: Xin Zeng, Liyuan Zhang, Cuihua Lu, Weirong Huang, Lihong Qu, Fei Xu, Xiaohang Wang, Zongli YuanAbstract:Abstract Background & Aims The EncephalApp Stroop Test is a high-sensitivity but low-specificity Test that has been used to identify patients with covert hepatic encephalopathy (CHE). We aimed to develop a new strategy to detect CHE, combining EncephalApp Stroop Test score with scores from subTests of the psychometric hepatic encephalopathy scoring system (PHES). Methods We performed a survey of 569 adult volunteers (229 men) in 9 communities in Shanghai, China, administering the EncephalApp Stroop Test to determine the range of scores in the general population. Data from the standard PHES, including the number connection Test-A, number connection Test-B (NCT-B), line tracing Test, serial dotting Test (SDT), and digit symbol Test, were used as the reference standard for diagnosis of CHE. A combination of the EncephalApp Stroop with subTests of the PHES was used to establish a new strategy for CHE diagnosis. We validated our findings using data from 160 patients with cirrhosis from 5 centers China. Results We determined the range of EncephalApp Stroop Test scores for the volunteers of different decades of age, education levels, and sexes. Age, education level, and sex were independently associated with EncephalApp Stroop Test scores. A combination of scores from the EncephalApp Stroop Test, the NCT-B, and the SDT identified patients with CHE with the highest level of accuracy, when the standard PHES was used as the reference standard. A combination of scores of 187 sec for the EncephalApp Stroop Test and below –1 for the NCT-B or below –1 for the SDT identified patients with CHE with an area under the curve (AUC) of 0.86, 81.0% sensitivity, and 91.9% specificity, and 87.5% accuracy. In the validation cohort, these cutoff scores identified patients with CHE with an AUC of 0.88, 97.1% sensitivity, 79.3% specificity, and 86.9% accuracy. The average time to calculate this score was 374±140 sec, compared 424±115 sec for the entire PHES. Conclusion Scores from the EncephalApp Stroop Test, NCT-B, and SDT identify patients with CHE with approximately 87% accuracy, and in a much shorter time than the standard PHES. This score combination could be a valid and convenient method for identifying patients with CHE. chictr.org.cn number, ChiCTR-EDC-17012007, ChiCTR1800019954.
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utility of the encephalapp Stroop Test for covert hepatic encephalopathy screening in chinese cirrhotic patients
Journal of Gastroenterology and Hepatology, 2019Co-Authors: Xin Zeng, Xiaoxue Li, Yuanyuan Zhang, Yang Song, Jasmohan S Bajaj, Yi Li, Yan GuAbstract:BACKGROUND AND AIM: Considering the large size of the potential population and limitations of common detection methods, covert hepatic encephalopathy (CHE) is difficult to screen for routinely. The present study aims to explore EncephalApp Stroop Test as a smartphone-based CHE screening tool in China. METHODS: A multicenter, single-visit study was carried out. The cutoff of the Chinese EncephalApp translation was determined by using Chinese standardized psychometric hepatic encephalopathy score (PHES) in cirrhotic patients as the gold standard. Indicators reflecting time required and number of Tests on subtask on (naming the color of pound signs) and off (naming the color of the word in discordant coloring) were recorded, with the feedback from investigators and patients. RESULTS: One hundred forty-four patients were included; 58 (40.28%) patients were diagnosed with CHE by PHES. The cutoff of > 97.34 s for off time and > 186.63 s for on time + off time had the maximum area under the curve values (0.77) in all patients. Furthermore, with the cutoff of 186.63 s, on time + off time has the highest sensitivity (0.86). However, the specificity was unsatisfactory (0.59). Age and alcoholic hepatitis (odds ratio = 1.05 and 3.12, both P < 0.05) were positively correlated with the risk of CHE. The experience with electronic devices and education duration were negatively correlated (odds ratio = 0.21 and 0.92, both P < 0.05). Compared with PHES, EncephalApp represented 38% time saving. Furthermore, it was superior to PHES regarding accessibility, convenience, and acceptability by administrators (all P < 0.05). CONCLUSIONS: The EncephalApp Stroop Test is an efficient screening tool for CHE in Chinese cirrhotic patients.
Masato Yoshimi - One of the best experts on this subject based on the ideXlab platform.
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EMBC - Measurements of right / left hemisphere activation using functional near-infrared spectroscopy during incongruent Stroop Test
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and, 2011Co-Authors: Tomoyuki Hiroyasu, Michihiro Fukuhara, Hisatake Yokouchi, Mitsunori Miki, Masato YoshimiAbstract:The human brain automatically processes information at multiple sites when recognizing various types of information at the same time, such as color, shape, etc. Cognitive conflict may occur when conflicting information is recognized at the same time. Functional near-infrared spectroscopy (fNIRS) is often used to examine the brain activity associated with this phenomenon. To examine activation of the visual system, we measured brain activity in the right / left hemispheres during cognitive conflict in the Stroop Test. Consistent with the results reported previously by Ehlis, the brain activity in the near inferior-frontal gyrus of the left hemisphere was increased during the incongruent task. The brain activity also increased in the near inferior-frontal gyrus of the right hemisphere during the incongruent task. These results indicated that fNIRS can be used to detect brain activity in the inferior-frontal gyrus of the right / left hemispheres during the Stroop Test.
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Measurements of right / left hemisphere activation using functional near-infrared spectroscopy during incongruent Stroop Test
2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2011Co-Authors: Tomoyuki Hiroyasu, Michihiro Fukuhara, Hisatake Yokouchi, Mitsunori Miki, Masato YoshimiAbstract:The human brain automatically processes information at multiple sites when recognizing various types of information at the same time, such as color, shape, etc. Cognitive conflict may occur when conflicting information is recognized at the same time. Functional near-infrared spectroscopy (fNIRS) is often used to examine the brain activity associated with this phenomenon. To examine activation of the visual system, we measured brain activity in the right / left hemispheres during cognitive conflict in the Stroop Test. Consistent with the results reported previously by Ehlis, the brain activity in the near inferior-frontal gyrus of the left hemisphere was increased during the incongruent task. The brain activity also increased in the near inferior-frontal gyrus of the right hemisphere during the incongruent task. These results indicated that fNIRS can be used to detect brain activity in the inferior-frontal gyrus of the right / left hemispheres during the Stroop Test.
Rachel Schiff - One of the best experts on this subject based on the ideXlab platform.
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eye movement performance on the Stroop Test in adults with adhd
Journal of Attention Disorders, 2019Co-Authors: Eli Vakil, Meital Mass, Rachel SchiffAbstract:Objective: To compare the eye movement patterns of adults with ADHD with those of controls as they perform the Stroop Test. Method: Thirty individuals with ADHD (ages 18-31), and 30 controls participated in this study. The hypothesis was that under the incongruent condition, the group with ADHD would focus longer on the distracter than the controls. Results: Participants with ADHD showed a more pronounced Stroop effect than the controls. Eye movements indicated that more time was spent fixating on the target than on the distracter. The most significant differences between the groups were the overall time spent on the target and the number of fixations on the target, rather than on the distracter. Furthermore, the group with ADHD made more transitions between the target and distracter stimuli. Conclusion: These results were interpreted to indicate an inefficient strategy used by the group with ADHD in their attempt to ignore the distracter stimuli.
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Eye Movement Performance on the Stroop Test in Adults With ADHD.
Journal of Attention Disorders, 2016Co-Authors: Eli Vakil, Meital Mass, Rachel SchiffAbstract:Objective: To compare the eye movement patterns of adults with ADHD with those of controls as they perform the Stroop Test. Method: Thirty individuals with ADHD (ages 18-31), and 30 controls partic...
Soung Won Jeong - One of the best experts on this subject based on the ideXlab platform.
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validation of the korean Stroop Test in diagnosis of minimal hepatic encephalopathy
Scientific Reports, 2019Co-Authors: Eileen L Yoon, Jae Yoon Jeong, Do Seon Song, Young Kul Jung, Myeong Jun Song, Soung Won JeongAbstract:The burden of minimal hepatic encephalopathy (MHE) is significant, but no universal criteria for diagnosis have been established. We aimed to validate the Korean Stroop Test for MHE screening. Chronic hepatitis B-related liver cirrhosis patients were recruited prospectively from 13 centers. The Korean Stroop Test consisted of two Stroop-off states (color and word) and two Stroop-on states (inhibition and switching). Accuracy adjusted psychomotor speed (rate correct score) of these Tests were analyzed. Sex- and age- adjusted rate correct scores of these Tests were rated as the Korean Stroop Score (K-Stroop score). MHE was diagnosed when Portosystemic Encephalopathy Syndrome Test (PHES) scores were below −4. A total of 220 liver cirrhosis patients and 376 healthy controls were enrolled. Prevalence of MHE was 20.6% in cirrhosis patients. Rate correct scores and the K-Stroop score showed significant differences between healthy controls, cirrhosis patients without MHE, and cirrhosis patients with MHE. The rate correct score of the K-Stroop score was 0.74 (95% Confidence Interval: 0.66–0.83, P < 0.001). Female gender and the K-Stroop score were significant for MHE diagnosis. The Korean Stroop Test is simple and valid for screening of MHE.
Yan Gu - One of the best experts on this subject based on the ideXlab platform.
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utility of the encephalapp Stroop Test for covert hepatic encephalopathy screening in chinese cirrhotic patients
Journal of Gastroenterology and Hepatology, 2019Co-Authors: Xin Zeng, Xiaoxue Li, Yuanyuan Zhang, Yang Song, Jasmohan S Bajaj, Yi Li, Yan GuAbstract:BACKGROUND AND AIM: Considering the large size of the potential population and limitations of common detection methods, covert hepatic encephalopathy (CHE) is difficult to screen for routinely. The present study aims to explore EncephalApp Stroop Test as a smartphone-based CHE screening tool in China. METHODS: A multicenter, single-visit study was carried out. The cutoff of the Chinese EncephalApp translation was determined by using Chinese standardized psychometric hepatic encephalopathy score (PHES) in cirrhotic patients as the gold standard. Indicators reflecting time required and number of Tests on subtask on (naming the color of pound signs) and off (naming the color of the word in discordant coloring) were recorded, with the feedback from investigators and patients. RESULTS: One hundred forty-four patients were included; 58 (40.28%) patients were diagnosed with CHE by PHES. The cutoff of > 97.34 s for off time and > 186.63 s for on time + off time had the maximum area under the curve values (0.77) in all patients. Furthermore, with the cutoff of 186.63 s, on time + off time has the highest sensitivity (0.86). However, the specificity was unsatisfactory (0.59). Age and alcoholic hepatitis (odds ratio = 1.05 and 3.12, both P < 0.05) were positively correlated with the risk of CHE. The experience with electronic devices and education duration were negatively correlated (odds ratio = 0.21 and 0.92, both P < 0.05). Compared with PHES, EncephalApp represented 38% time saving. Furthermore, it was superior to PHES regarding accessibility, convenience, and acceptability by administrators (all P < 0.05). CONCLUSIONS: The EncephalApp Stroop Test is an efficient screening tool for CHE in Chinese cirrhotic patients.
