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Unusual neural tract between injured fornix and pedunculopontine nucleus in a patient with traumatic brain injury

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Neural Regeneration Research 2017年第9期12卷 1559-1560页

作者： Sung Ho Jang jeong pyo seo Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University

It has been known that four cholinergic nuclei are located in the septal region and basal forebrain （Ch 1： medial septal nucleus, Ch 2： vertical nucleus of the diagonal band, Ch 3： horizontal limb of the diagonal band and Ch 4： nucleus basalis of Meynert） and two are located in the brainstem （Ch 5： pedunculopontine nucleus and Ch 6： laterodorsal tegmental nucleus）（Selden et al., 1998; Lucas-Meunier et al., 2003; Mesulam, 2004; Nieuwenhuys et al., 2007）. The fornix transfers information on episodic mem- ory between the medial diencephalon and the medial temporal lobe （Afifi and Bergman, 2005; Wolk and Budson, 2010）. The fornix is known to obtain cholinergic innervation from Ch 1 and Ch 2, and to project to the hippocampal formation （Selden et al., 1998; Lucas-Meunier et al., 2003; Mesulam, 2004; Nieu- wenhuys et al., 2007; Dere et al., 2008; Naidich and Duvernoy, 2009; Isaacson and Pribram, 2013）.

关键词： TBI Unusual neural tract between injured fornix and pedunculopontine nucleus in a patient with traumatic brain injury

Multiple injuries of the ascending reticular activating system in a stroke patient:a diffusion tensor tractography study

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Neural Regeneration Research 2017年第1期12卷 151-152页

作者： Sung Ho Jang jeong pyo seo Department of Physical Medicine and Rehabilitation College of MedicineYeungnam UniversityDaemyungdongNamGuDaeguRepublic of Korea

Consciousness is mainly controlled by activation of the ascending reticular activating system（ARAS）.Diffusion tensor tractography（DTT）,which is reconstructed from diffusion tensor imaging（DTI）data.

关键词： activating tensor ascending reconstructed injuries basal subarachnoid rehabilitation infarct injured

Recovery of the corticospinal tracts injured by subfalcine herniation: a diffusion tensor tractography study

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Neural Regeneration Research 2014年第12期9卷 1231-1233页

作者： jeong pyo seo Sung Ho Jang Department of Radiology Second Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University

Motor weakness is one of the most serious disabling sequelae of stroke. For successful rehabilitation, thorough estimation of the state of injured neural tracts for motor function is mandatory. After development of diffusion tensor tractogra- phy （DTT）, which is derived from diffusion tensor imaging （DTI）, three-dimensional reconstruction and estimation for three motor tracts, such as the corticospinal tract, the rubrospinal tract, and the corticoreticular pathway became possible （Kunimatsu et al., 2004; Puig et al., 2010; Yang et al., 2011）. The corticospinal tract is known to be a major neural tract for motor function in the human brain （Binkofski et al., 1996）.

关键词： a diffusion tensor tractography study DTI

Disappearance of unaffected motor cortex activation by repetitive transcranial magnetic stimulation in a patient with cerebral infarct

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Neural Regeneration Research 2014年第7期9卷 761-762页

作者： jeong pyo seo Sung Ho Jang Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University

The ipsilateral motor pathway from the unaffected motor cortex to the affected extremity is one of the motor recovery mechanisms following stroke （Jang, 2011）. Because stroke patients who had shown recovery by this mechanism usually showed poorer motor function, compared with patients who showed recovery by other mechanisms, several researchers have considered this mechanism as a maladaptive plasticity （]ang, 2013）.

关键词： Disappearance of unaffected motor cortex activation by repetitive transcranial magnetic stimulation in a patient with cerebral infarct MCA

Unusual neural connection between injured cingulum and brainstem in a patient with subarachnoid hemorrhage

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Neural Regeneration Research 2014年第5期9卷 498-499页

作者： jeong pyo seo Sung Ho Jang Department of Physical Medicine and Rehabilitation College of MedicineYeungnam UniversityDaegu Republic of Korea

The human brain is known to have six cholinergic nudei （Selden et al., 1998; Nieuwenhuys et al., 2008）. The cerebral cortex obtains cholinergic innervation mainly from the basalis nucleus of Meynert （Ch 4） in the bas- al forebrain through the medial and lateral cholinergic pathways （Selden et al., 1998; Mesulam et al., 1983）. The cingulum, the neural fiber bundle connecting the basal forebrain and the medial temporal lobe, contains the medial cholinergic pathway （Selden et al., 1998; Hong and Jang, 2010）.

关键词： Unusual neural connection between injured cingulum and brainstem in a patient with subarachnoid hemorrhage

Injury of corticoreticular pathway and corticospinal tract caused by ventriculoperitoneal shunting

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Neural Regeneration Research 2015年第11期10卷 1874-1875页

作者： Sung Ho Jang jeong pyo seo Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University

Ventriculoperitoneal shunting is a commonly used neurosurgical procedure for management of hydrocephalus（Jang et al.,2015）.Various complications of ventriculoperitoneal shunting have been reported,including infection,hemorrhage,shunt malfunction,shunt displacement and brain swelling（Kwon and Jang,2012,2015）.Although ventriculoperitoneal shunting can cause injury of adjacent neural tracts,little is known about injury of the neural tract by ventriculoperitoneal shunting（Kwon and Jang, 2013）.

关键词： CRP CST DTI Figure

Delayed gait recovery in a stroke patient

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Neural Regeneration Research 2013年第16期8卷 1514-1518页

作者： jeong pyo seo Mi Young Lee Yong Hyun Kwon Sung Ho Jang Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University Department of Physical Therapy College of Health and Therapy Daegu Haany University Department of Physical Therapy Yeungnam College of Science & Technology

We report on a stroke patient who showed delayed gait recovery between 8 and 11 months after the onset of intracerebral hemorrhage. This 32-year-old female patient underwent craniotomy and drainage for right intracerebral hemorrhage due to rupture of an arteriovenous malformation. Brain MR images revealed a large leukomalactic lesion in the right fronto-parietal cortex. Diffusion tensor tractography at 8 months after onset revealed that the right corticospinal tract was severely injured. At this time, the patient could not stand or walk despite undergoing rehabilitation from 2 months after onset. It was believed that severe spasticity of the left leg and right ankle was largely responsible, and thus, antispastic drugs, antispastic procedures （alcohol neurolysis of the motor branch of the tibial nerve and an intramuscular alcohol wash of both tibialis posterior muscles） and physical therapy were tried to control the spasticity. These measures relieved the severe spasticity, with the result that the patient was able to stand at 3 months. In addition, the improvements in sensorimotor function, visuospatial function, and cognition also seemed to contribute to gait recovery. As a result, she gained the ability to walk independently on even floor with a left ankle foot orthosis at 11 months after onset. This case illustrates that clinicians should attempt to find the cause of gait inability and to initiate intensive rehabilitation in stroke patients who cannot walk at 3-6 months after onset.

关键词： neural regeneration brain injury stroke diffusion tensor imaging sequelae gait walk motor recovery corticospinal tract rehabilitation intracerebral hemorrhage grants-supported paper neuroregeneration

Optic radiation injury in patients with aneurismal subarachnoid hemorrhage: a preliminary diffusion tensor imaging report

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Neural Regeneration Research 2018年第3期13卷 563-566页

作者： Sung Ho Jang Chul Hoon Chang Young Jin Jung seong Ho Kim jeong pyo seo Department of Physical Medicine and Rehabilitation College of Medicine Yeungnam University Department of Neurosurgery College of Medicine Yeungnam University

Visual field defect is one of the various clinical manifestations in patients with subarachnoid hemorrhage（SAH）. Little is known about the pathogenic mechanism of visual field defect in SAH. In the current study,we investigated the diffusion tensor imaging （DTI） finding of the optic radiation in patients with SAH followingrupture of a cerebral artery aneurysm. We recruited 21 patients with aneurismal SAH （12 males, 9 females, mean age, 52.67 years; range, 41–68 years） who showed no definite lesion along the visual ***-one age-and sex-matched normal control subjects were also recruited. DTI data were acquired at an average of 5.9 weeks （range： 3–12 weeks） after onset and reconstruction of the optic radiation was performed using DTI-Studio software. The fractional anisotropy value, apparent diffusion coefficient value,and fiber number of the optic radiation were measured. The fractional anisotropy value of the optic radiation was significantly decreased, and the apparent diffusion coefficient value was significantly increased, in patients with aneurismal SAH than in normal control subjects. However, there was no significant difference in the fiber number of the optic radiation between patients with aneurismal SAH and normal control subjects. The decrement of fractional anisotropy value and increment of apparent diffusion coefficient value of the optic radiation in patients with aneurismal SAH suggest optic radiation injury. Therefore, we recommend a thorough evaluation for optic radiation injury in patient with aneurismal SAH.

关键词： nerve regeneration diffusion tensor imaging optic radiation subarachnoid hemorrhage visual field defect neural regeneration

Analysis and Experiment on the Steering Control of a Water-running Robot Using Hydrodynamic Forces

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Journal of Bionic Engineering 2017年第1期14卷 34-46页

作者： HyunGyu Kim Kyungmin jeong TaeWon seo School of Mechanical Engineering Yeungnam University Gyeongsan 712-749 Republic of Korea Nuclear Convergence Technology Division Korea Atomic Energy. Research Institute Daejeon 305-353 Republic of Korea

Steering is important for the high maneuverability of mobile robots. Many studies have been performed to improve the maneuverability using a tail. The aim of this research was to verify the performance of a water-running robot steering on water using a tail. Kinematic analysis was performed for the leg mechanism and the interaction forces between the water and the feet to calculate the propulsive drag force of the water. This paper suggests a simplified planar two-link rigid body model to determine the dynamic performance of the robotic platform with respect to the effect of the tail＇s motion. Simulations based on a dynamic model were performed by applying a range of motions to the tail. In addition, a simulation with a Bang-bang controller was also performed to control the main frame＇s yawing locomotion. Finally, an experiment was conducted with the controller, and the simulation and experimental results were compared. These results can be used as a guideline to develop a steerable water-running robot.

关键词： basilisk lizard water-running robot steering Static Tail (ST) Dynamic Tail (DT) planar two-link rigid body