1.The physiological and psychological mechanisms of infra-slow oscillation.
Xiu-Juan JING ; Yu-Jia AO ; Yu-Jie OUYANG ; Yang LIU ; Yi-Feng WANG
Acta Physiologica Sinica 2021;73(6):973-979
Infra-slow oscillation (ISO) is a kind of brain rhythm between 0.01 and 0.5 Hz. ISO is widely distributed in multiple brain regions. As an important psychophysiological activity, the ISO interacts with high-frequency neural rhythm via cross-frequency coupling, but has different activity patterns from high-frequency neural activity. Physiologically, the ISO may be generated by the dynamic activity of thalamus, glia, and ions. Psychologically, the frequency, amplitude, and phase of ISO could all regulate cognitive activities, but in different ways. Investigations on the ISO expands the neural rhythm research to lower frequency range, further promoting the construction of rhythmic theory of brain function.
Brain
;
Thalamus
2.A Case of Reversible Marchiafava-Bignami Disease Showing Severe Thalamic Hypometabolism in PET.
Yang Ki MINN ; Hyun Duk YANG ; Il Hong SON ; Seung Han SUK
Journal of the Korean Neurological Association 2002;20(3):320-321
No abstract available.
Marchiafava-Bignami Disease*
;
Thalamus
3.Astasia and Asterixis after Acute Unilateral Thalamic Infarction.
Hyo Kyung KIM ; Jong Sung KIM ; Myoung Chong LEE
Journal of the Korean Neurological Association 1995;13(1):104-108
Organic causes of astasia or asterixis have been described in the literature. However, concurrent unilateral manifestation of the two symptoms is extremely rare. We report two cases presenting with astasia and asterixis due to infarcts involving the ventrolateral nucleus of the left thalamus. Acute onset of astasia or asterixis in patients without significant metabolic disorder should alert the clinician on the possibility of acute stroke involving the thalamus.
Dyskinesias*
;
Humans
;
Infarction*
;
Stroke
;
Thalamus
4.Four Cases of Paramedian Thalamopeduncular Artery Infarction.
Jong Hyun REU ; Seong Hwan AHN ; Won Young JUNG
Journal of the Korean Neurological Association 2000;18(6):768-773
Cerebral infarction in the territory of the paramedian thalamopeduncular artery (PTA) causes various lesions in the upper midbrain and thalamus resulting in widespread disturbances in neurological function. However, the exact topography and variations in the territories of the PTA remain unknown. We report four patients with MRI-proven infarctions in the PTA territory. One patient had lesions in the unilateral thalamus and midbrain, the other two had lesions in the bilateral paramedian thalamus and unilateral midbrain, and the remaining patient had lesions in the unilateral thalamus and bilateral midbrain. Clinical manifestations depended on the variations of the size and extent of infarctions. Theanatomical variations of the PTA are discussed and suggested.
Arteries*
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Cerebral Infarction
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Humans
;
Infarction*
;
Mesencephalon
;
Thalamus
5.Japanese B Encephalitis with Favorable Recovery; Clinical Course, Brain Imaging, and Neuropsychological Findings.
Sang Bub LEE ; Jung Im SEOK ; Jun Woo KIM
Journal of the Korean Neurological Association 2015;33(2):113-115
No abstract available.
Encephalitis, Japanese*
;
Neuroimaging*
;
Neuropsychological Tests
;
Thalamus
6.Atypical Cheiro-oral Syndrome Presented With Bilateral Perioral Sensory Symptoms in Unilateral Thalamic Infarction.
Jin Young SEO ; Ju Hee LEE ; Do Hyun NAM ; Sun Young OH ; Byoung Soo SHIN
Journal of the Korean Neurological Association 2010;28(4):298-300
Cheiro-oral syndrome is a unilateral sensory impairment that is restricted to the homolateral hand and perioral area. An unusual clinical presentation with bilateral perioral involvement has also been described. Most of the responsible lesions involved the paramedian pontine tegmentum; thalamic involvement is extremely rare. We report herein a patient who presented with purely sensory symptoms involving the bilateral perioral regions and the distal thumb and index finger of the left hand following a small infarction in the right lateral thalamus.
Fingers
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Hand
;
Humans
;
Infarction
;
Thalamus
;
Thumb
7.Dementia Following Infarcts in the Left Tuberothalamic Territory:Review of Six Patients.
Kyoung HEO ; Byung In LEE ; Kyoon HUH ; jin Soo KIM ; Seung Min KIM ; Myung Sik LEE ; Byung Chul LEE
Journal of the Korean Neurological Association 1989;7(2):188-198
Modern capacity for high-resolution brain imaging has facilitated studying the clinicoanatomic correlations of small lesions in subcortical nuclear structures. Several recent reports have convincingly demonstrated that there were particular clinical syndromes associated with specific distributions of thalamic lesions. Thalamic dysfunction due to diveres casues, particularily in the left side has been associated with memory impairment, speech disturbance, cognitive deficits, and behavioural changes. Simplified bedside behavioral examinations were performed in six patients with the left tuberothalamic infarcts. We found severe neuropsychological deficits considered as dementia meeting the DSM III criteria, leaving few focal motor and sensory deficits. The disturbance of attention, speech, cognition and behavior after the left tuberothalamic infarcts are probably related not only to intrinsic thalamic dysfunction itself, but also to the disruption of the regular function of motor, sensory, and integrative cortical stuctures connecting with the thalamus.
Cognition
;
Dementia*
;
Humans
;
Memory
;
Neuroimaging
;
Thalamus
8.Astrocytoma in the Bilateral Thalamus: A Case Report.
Eul Soo CHUNG ; Jang Ho BAE ; Dong Ro HAN ; Eun Sik DOH ; Oh Lyong KIM ; Yong Chul CHI ; Byung Yearn CHOI ; Soo Ho CHO
Yeungnam University Journal of Medicine 1990;7(2):167-172
Astrocytoma in the thalamus in not so frequent in incidence (1%). Moreover, bilateral thalamic tumor is rare. Certain tumors of the thalamus are considered resectable but most of thalamic tumors are thought to be untouchable. Bilateral thalamic astrocytoma with hydrocephalus was diagnosed by stereotactic biopsy and ventriculoperitoneal shunt operation was done with result of improvement. We report a case of astrocytoma in the bilateral thalamus with literature review.
Astrocytoma*
;
Biopsy
;
Hydrocephalus
;
Incidence
;
Thalamus*
;
Ventriculoperitoneal Shunt
9.Bilateral Paramedian Thalamic Infarction due to Occlusion of Artery of Percheron.
Sun Woo PARK ; Sook Keun SONG ; Sa Yoon KANG ; Ji Hoon KANG ; Jung Seok LEE
Journal of the Korean Neurological Association 2013;31(3):189-191
The thalamic vascular supply is categorized into the anterior, paramedian, inferolateral, and posterior territories. The artery of Percheron (AOP), a solitary trunk that is an uncommon anatomic variant, provides bilateral arterial supply to the paramedian thalami and the rostral midbrain. Occlusion of this artery results in bilateral thalamic and mesencephalic infarctions. The case described herein is of a patient with AOP who presented with the sudden onset of lethargy.
Arteries
;
Humans
;
Infarction
;
Lethargy
;
Mesencephalon
;
Thalamus
10.Bilateral Paramedian Thalamic Infarction due to Occlusion of Artery of Percheron.
Sun Woo PARK ; Sook Keun SONG ; Sa Yoon KANG ; Ji Hoon KANG ; Jung Seok LEE
Journal of the Korean Neurological Association 2013;31(3):189-191
The thalamic vascular supply is categorized into the anterior, paramedian, inferolateral, and posterior territories. The artery of Percheron (AOP), a solitary trunk that is an uncommon anatomic variant, provides bilateral arterial supply to the paramedian thalami and the rostral midbrain. Occlusion of this artery results in bilateral thalamic and mesencephalic infarctions. The case described herein is of a patient with AOP who presented with the sudden onset of lethargy.
Arteries
;
Humans
;
Infarction
;
Lethargy
;
Mesencephalon
;
Thalamus