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29 results on '"Kang, Ilhyang"'

13. Altered functional connectivity in the fear network of firefighters with repeated traumatic stress

Author

Jeong, Hyeonseok, primary, Park, Shinwon, additional, Dager, Stephen R., additional, Lim, Soo Mee, additional, Lee, Suji L., additional, Hong, Haejin, additional, Ma, Jiyoung, additional, Ha, Eunji, additional, Hong, Young Sun, additional, Kang, Ilhyang, additional, Lee, Eun Hee, additional, Yoon, Sujung, additional, Kim, Jieun E., additional, Kim, Jungyoon, additional, and Lyoo, In Kyoon, additional

Published
2018
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14. Alterations in structural rich-club connectivity of the precuneus are associated with depressive symptoms among individuals with subjective memory complaints

Author

Kim, Geon Ha, primary, Kim, Jung Yoon, additional, Kim, Jieun E., additional, Ma, Jiyoung, additional, Kim, Bori R., additional, Im, Jooyeon Jamie, additional, Jeong, Hyeonseok S., additional, Namgung, Eun, additional, Lee, Suji, additional, Kang, Ilhyang, additional, Lyoo, In Kyoon, additional, Hwang, Jaeuk, additional, and Yoon, Sujung, additional

Published
2018
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15. Altered attentional control over the salience network in complex regional pain syndrome

Author

Kim, Jungyoon, primary, Kang, Ilhyang, additional, Chung, Yong-An, additional, Kim, Tae-Suk, additional, Namgung, Eun, additional, Lee, Suji, additional, Oh, Jin Kyoung, additional, Jeong, Hyeonseok S., additional, Cho, Hanbyul, additional, Kim, Myeong Ju, additional, Kim, Tammy D., additional, Choi, Soo Hyun, additional, Lim, Soo Mee, additional, Lyoo, In Kyoon, additional, and Yoon, Sujung, additional

Published
2018
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17. Brain structural changes in cynomolgus monkeys administered with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine: A longitudinal voxel-based morphometry and diffusion tensor imaging study

Author

Jeong, Hyeonseok S., primary, Lee, Sang-Rae, additional, Kim, Jieun E., additional, Lyoo, In Kyoon, additional, Yoon, Sujung, additional, Namgung, Eun, additional, Chang, Kyu-Tae, additional, Kim, Bom Sahn, additional, Yang, Sejung, additional, Im, Jooyeon J., additional, Jeon, Saerom, additional, Kang, Ilhyang, additional, Ma, Jiyoung, additional, Chung, Yong-An, additional, and Lim, Soo Mee, additional

Published
2018
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18. Firefighters, posttraumatic stress disorder, and barriers to treatment: Results from a nationwide total population survey

Author

Kim, Jieun E., primary, Dager, Stephen R., additional, Jeong, Hyeonseok S., additional, Ma, Jiyoung, additional, Park, Shinwon, additional, Kim, Jungyoon, additional, Choi, Yera, additional, Lee, Suji L., additional, Kang, Ilhyang, additional, Ha, Eunji, additional, Cho, Han Byul, additional, Lee, Sunho, additional, Kim, Eui-Jung, additional, Yoon, Sujung, additional, and Lyoo, In Kyoon, additional

Published
2018
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20. Caudate Volumetric Reductions Predicted by Carbohydrate-Deficient Transferrin in Patients with Alcohol Dependence

Author

Park, Shinwon, primary, Jung, Jiyoung J., additional, Kang, Ilhyang, additional, Lee, Boung Chul, additional, Lee, Suji L., additional, Ma, Jiyoung, additional, Kim, Jungyoon, additional, Cho, Han Byul, additional, Jeong, Hyeonseok S., additional, Lim, Soo Mee, additional, Hong, Young Sun, additional, Choi, Ihn-Geun, additional, and Kim, Jieun E., additional

Published
2017
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22. Psychometric Properties of the Alcohol Use Disorders Identification Test-Consumption (AUDIT-C) in Public First Responders

Author

Jeong, Hyeonseok S., primary, Park, Shinwon, additional, Lim, Soo Mee, additional, Ma, Jiyoung, additional, Kang, Ilhyang, additional, Kim, Jungyoon, additional, Kim, Eui-Jung, additional, Choi, Yejee J., additional, Lim, Jae-ho, additional, Chung, Yong-An, additional, Lyoo, In Kyoon, additional, Yoon, Sujung, additional, and Kim, Jieun E., additional

Published
2017
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24. Metabolic alterations in the anterior cingulate cortex and related cognitive deficits in late adolescent methamphetamine users

Author

Kim, Jieun E., primary, Kim, Geon Ha, additional, Hwang, Jaeuk, additional, Kim, Jung Yoon, additional, Renshaw, Perry F., additional, Yurgelun-Todd, Deborah A., additional, Kim, Binna, additional, Kang, Ilhyang, additional, Jeon, Saerom, additional, Ma, Jiyoung, additional, Lyoo, In Kyoon, additional, and Yoon, Sujung, additional

Published
2016
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26. Altered functional connectivity in the fear network of firefighters with repeated traumatic stress.

Author

Jeong, Hyeonseok, Park, Shinwon, Dager, Stephen R., Lim, Soo Mee, Lee, Suji L., Hong, Haejin, Ma, Jiyoung, Ha, Eunji, Hong, Young Sun, Kang, Ilhyang, Lee, Eun Hee, Yoon, Sujung, Kim, Jieun E., Kim, Jungyoon, and Lyoo, In Kyoon

Subjects
IMPACT of Event Scale, FUNCTIONAL magnetic resonance imaging, PSYCHIATRIC diagnosis, POST-traumatic stress disorder, FIRE fighters, FRONTAL lobe, RESEARCH, HIPPOCAMPUS (Brain), NERVOUS system, BASAL ganglia, FEAR, EVALUATION research, MEDICAL cooperation, COMPARATIVE studies, PSYCHOSOCIAL factors, NEUROLOGIC examination
Abstract

Background: Firefighters are routinely exposed to various traumatic events and often experience a range of trauma-related symptoms. Although these repeated traumatic exposures rarely progress to the development of post-traumatic stress disorder, firefighters are still considered to be a vulnerable population with regard to trauma.AimsTo investigate how the human brain responds to or compensates for the repeated experience of traumatic stress.Method: We included 98 healthy firefighters with repeated traumatic experiences but without any diagnosis of mental illness and 98 non-firefighter healthy individuals without any history of trauma. Functional connectivity within the fear circuitry, which consists of the dorsal anterior cingulate cortex, insula, amygdala, hippocampus and ventromedial prefrontal cortex (vmPFC), was examined using resting-state functional magnetic resonance imaging. Trauma-related symptoms were evaluated using the Impact of Event Scale - Revised.Results: The firefighter group had greater functional connectivity between the insula and several regions of the fear circuitry including the bilateral amygdalae, bilateral hippocampi and vmPFC as compared with healthy individuals. In the firefighter group, stronger insula-amygdala connectivity was associated with greater severity of trauma-related symptoms (β = 0.36, P = 0.005), whereas higher insula-vmPFC connectivity was related to milder symptoms in response to repeated trauma (β = -0.28, P = 0.01).Conclusions: The current findings suggest an active involvement of insular functional connectivity in response to repeated traumatic stress. Functional connectivity of the insula in relation to the amygdala and vmPFC may be potential pathways that underlie the risk for and resilience to repeated traumatic stress, respectively.Declaration of interestNone. [ABSTRACT FROM AUTHOR]

Published
2019
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28. Using a Tablet Device to Compensate for Underestimation of Cognitive Function due to Impaired Dominant Hand Function in Stroke Patients.

Author

Kim, Jungyoon, Kim, Bo Ra, Kang, Ilhyang, Kye, Myung-Eun, Kim, Ju Han, Kim, Jieun E., Yoon, Sujung, Lyoo, In Kyoon, and Lim, Soo Mee

Subjects
TABLET computers, COGNITIVE ability, ACADEMIC ability, DISABILITIES, EDUCATION
Abstract

This study aimed to investigate whether a touch-screen tablet device can be used to avoid underestimation of cognitive function due to hand disability in patients with stroke. Thirty patients with stroke and hemiplegia were divided according to whether the paretic side corresponded to their dominant or non-dominant hand. They were given the cube-copying task twice, once via paper and once via tablet. The results between paper- and tablet-based tasks were more likely to be concordant in participants with a non-paretic dominant hand (z = 2.80,p = 0.005) when the stroke type, education years, and sex were included in the model. All participants with discordant test results had a paretic dominant hand and showed lower muscle power in the wrist and hand muscles. In conclusion, cognitive function in patients with a paretic dominant hand may be underestimated in the cube-copying task, because it requires handwriting ability. This could be prevented by using a touch-screen device. [ABSTRACT FROM AUTHOR]

Published
2017
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29. Recovery from Posttraumatic Stress Requires Dynamic and Sequential Shifts in Amygdalar Connectivities

Author

Yoon, Sujung, Kim, Jieun E, Hwang, Jaeuk, Kang, Ilhyang, Jeon, Saerom, Im, Jooyeon J, Kim, Bori R, Lee, Sunho, Kim, Geon Ha, Rhim, Hyewhon, Lim, Soo Mee, and Lyoo, In Kyoon

Abstract

The neural mechanisms underlying the development and maintenance of posttraumatic stress disorder (PTSD) have long been studied. However, little is known about the neural correlates of the recovery process from PTSD. A 5-year longitudinal study was conducted to investigate the trajectory of structural connectivities of the amygdala in disaster survivors with PTSD. Thirty disaster survivors, who were diagnosed with PTSD, and 29 healthy individuals, who were not exposed to trauma, underwent three waves of assessments including neuroimaging scanning over a 5-year period from the time of the disaster at approximately 1.3-year intervals. All disaster survivors showed significant improvements in PTSD symptoms over time. Using diffusion tensor imaging analysis, a 5-year trajectory of amygdalar structural connectivities with key brain regions was assessed. The amygdala–insula connection was initially strengthened and then normalized during recovery, while the amygdala–prefrontal cortex (PFC) connection was at first unaffected, then strengthened, and eventually normalized. The lower tract strength of the amygdala–thalamus connection normalized during recovery, while that of amygdala–hippocampus connection remained low. The greater amygdala–PFC connectivity was associated with less PTSD symptom severity. The present longitudinal study revealed that recovery from PTSD parallels dynamic and sequential shifts in amygdalar connectivities with multiple brain regions, suggesting the expanded view of fear circuitry including the insula and thalamus, beyond the traditional model which primarily involves the amygdala, PFC, and hippocampus.

Published
2017
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