scholarly journals Bikeles. Thrombosis of the anterior cerebral artery.— Neurol. Centralblatt. 1899, p. 443

2020 ◽  
Vol VIII (3) ◽  
pp. 192-193
Author(s):  
G. Troshin
Keyword(s):  
Brain Stem ◽  
Frontal Lobe ◽  
Globus Pallidus ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Outer Part ◽  
Posterior Part ◽  
The Brain

The duration of the disease is 16 days; The study was made using the Marchi method. The foci were localized in the next places: 1) In the posterior part of the upper and lower frontal convolutions, not reaching the central convolutions a focus with a depth of 3.2-3.5 st .; 2) in the strio-lenticular part of the cap. int., another hearth of 8x3 st .; 3) small foci in the frontal lobe; 4) near the putamen focus, leaving the globus pallidus free and filling the putamen with decay; 5) in the outer part of the brain stem there are small foci of softening.

scholarly journals Behavioural changes as the first manifestation of a silent frontal lobe stroke

2019 ◽  
Vol 12 (1) ◽  
pp. bcr-2018-227617
Author(s):  
Rafael García Carretero ◽  
Blanca-Nieves Beamonte-Vela ◽  
Jose-David Silvano-Cocinero ◽  
Ana Alvarez-Mendez
Keyword(s):  
Frontal Lobe ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Behavioural Changes ◽  
Patient Reported ◽  
Frontal Lobe Syndrome ◽  
Insight Into

A 67-year-old man was admitted to our hospital after his relatives found him to have severe personality and behavioural changes. His behaviour was inappropriate and uninhibited. The patient reported no symptoms and he showed poor insight into his own behaviour. Neuroimaging showed an orbitofrontal lesion, due to an infarction of the anterior cerebral artery. The patient was diagnosed with frontal lobe syndrome.

Human fetal medial striate artery or artery of Heubner

2009 ◽  
Vol 3 (4) ◽  
pp. 296-301 ◽  
Author(s):  
Ljiljana Vasović ◽  
Sladjana Ugrenović ◽  
Ivan Jovanović
Keyword(s):  
Middle Cerebral Artery ◽  
Diagnostic Test ◽  
Cerebral Artery ◽  
Cerebral Circulation ◽  
Anterior Cerebral Artery ◽  
Anatomical Variations ◽  
Test Results ◽  
Terminal Part ◽  
The Brain

Object The authors describe some of the features of the medial striate branch or recurrent artery of Heubner (RAH). This structure has indisputable functional, neurological, and neurosurgical significance, and originates from the A1 and/or A2 segments of the anterior cerebral artery. Methods Microdissection of 94 human fetal specimens was performed. The RAH was observed in 97.3% (single in 71.6%, double in 25.1%, and triple in 3.3%) of the cases. Its origin was from A2 in 42.3% of specimens, from the A1–A2 junction in 25.7%, and from A1 in 20%. Results Five types and 14 subtypes of the RAH were identified, determined based on vessel origin and number. In its course, the RAH gave 1–12 branches, and the terminal part most frequently penetrated into the brain through the anterior perforated substance at the level of the sphenoid segment of the middle cerebral artery. The specimens with a single RAH fenestration, abnormal double RAH anastomosis, and unusual RAH origin and relationship to the surrounding vessels represented new data. Conclusions The authors' observations of common anatomical variations in the number and origin of the RAH, as well as its abnormalities, may assist neuroradiologists in the interpretation of diagnostic test results and neurosurgeons in performing procedures in the anterior cerebral circulation.

Giant Aneurysm Arising from the Anterior Cerebral Artery and Causing an Isolated Homonymous Hemianopsia

Neurosurgery ◽  
1988 ◽  
Vol 22 (3) ◽  
pp. 560-563 ◽  
Author(s):  
Mark Versavel ◽  
Jan P. Witmer ◽  
Bart Matricali
Keyword(s):  
Visual Field ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Dynamic Assessment ◽  
Posterior Part ◽  
Giant Aneurysm ◽  
Optic Chiasm ◽  
Visual Field Examination ◽  
Homonymous Hemianopsia ◽  
First Case

Abstract A case of a giant aneurysm arising from the anterior cerebral artery and producing a left homonymous hemianopsia is presented. The aneurysm caused lateral compression of the posterior part of the optic chiasm. After preoperative dynamic assessment of the circle of Willis by angiography and by electroencephalographic recording during carotid artery compression, the aneurysm was trapped with microclips on the anterior cerebral artery proximal and distal to it. Visual field examination 6 months postoperatively showed complete visual field recovery. This is the first case of homonymous hemianopsia caused by an angiographically proven giant aneurysm of the ACA. (Neurosurgery 22:560-563, 1988)

The Effect of Splitting part of the Brain or Removal of the Median Inferior Frontal Lobe on Touch Learning in Octopus

1969 ◽  
Vol 50 (2) ◽  
pp. 515-526
Author(s):  
M. J. WELLS ◽  
J. Z. YOUNG
Keyword(s):  
Frontal Lobe ◽  
Anterior Part ◽  
Posterior Part ◽  
Tactile Discrimination ◽  
Learning Mechanism ◽  
Marked Preference ◽  
Smooth Objects ◽  
The Brain ◽  
Correct Discrimination ◽  
Good Transfer

1. Octopuses with the whole supraoesophageal lobe divided in the mid-line show a lesser preference for smooth objects than normals. 2. Learning of a simple successive tactile discrimination can proceed as fast in such a half-brain as in a whole brain. 3. Animals in which the anterior part of the supraoesophageal lobe alone was split also learned approximately as fast as normals. When tested on the untrained side they showed at most slight signs of ‘transfer’. The unsplit vertical lobe system apparently mediates little transfer, either of learning to take or not to take an object. 4. Animals with the posterior part of the supraoesophageal lobe alone split learned less well than normals or those with anterior splits, the deficit being due to the large number of takes of the negative object. Tests on the untrained side showed that good transfer of the capacity for positive and negative learned response occurred through the intact inferior frontal commissures. 5. Animals without the median inferior frontal lobe showed a marked preference for rough objects. Of six trained with smooth positive only two showed increasingly correct discrimination. Four out of seven animals trained with rough positive showed an increasingly correct performance as a result of training. The performance of the others got worse as training proceeded. It is not clear whether this learning deficit is due to the excessive rough preference or to the absence of some part of the learning mechanism owing to removal of the median inferior frontal lobe. 6. Tests on the untrained side of animals without median inferior frontal show no capacity to discriminate. This shows that the median inferior frontal is vital to lateral transfer and confirms that learning cannot readily be transferred through the vertical lobe system.

scholarly journals Clinical and neuroimaging analysis of carotid infarction in the acute ischemic stroke

2021 ◽  
Vol 17 (5) ◽  
pp. 36-46
Author(s):  
M.M. Prokopiv
Keyword(s):  
Ischemic Stroke ◽  
Acute Ischemic Stroke ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Clinical Manifestations ◽  
Short Term ◽  
Middle Cerebral Arteries ◽  
Proximal Anterior Cerebral Artery ◽  
The Brain

Background. The assessment of clinical manifestations in patients with acute pre-circular infarction is important for verification of the lesion, the choice of the treatment program, prediction of the stroke consequences. The purpose is to investigate the clinical, neurological, and neuroimaging features of lacunar and non-lacunar carotid infarctions in acute ischemic stroke and to assess their short-term consequences. Materials and methods. There was performed a clinical and radiological analysis of carotid infarction in 540 patients with acute ischemic stroke, which were divided into two groups: 155 patients were verified for infarcts in the cortex and white matter of the brain in the vasculature of the anterior and middle cerebral artery; in 385 patients, infarct foci were found in the area of the deep hemispheres of the brain (subcortical-capsular infarcts). Results. Clinical neuroimaging analysis of patients with ischemic stroke in the vasculature of the cortical branches of the anterior and middle cerebral arteries of the anterior circulatory basin showed that acute cerebral circulatory disorders caused the development of small cortical infarctions in 89 (57.4 %) patients and 65 (41 %) — lacunar infarction, in one patient (0.7 %) with occlusion of the proximal anterior cerebral artery — total infarction. The neurological clinical picture of infarcts of varying localization, which was determined by the location and size of the lesion, was described. Conclusions. The obtained results showed that the consequences of anterior circular infarctions depended on the localization of the lesion of the arterial area, the caliber of the infarction of the dependent artery, the size of the infarct locus. For the most part, these factors determined the background severity of neurological deficit after the development of acute ischemic stroke.

Cerebrovascular Disease 1: Vascular Territories (DRAFT)

2018 ◽  
Author(s):  
Tamara Kaplan ◽  
Tracey Milligan
Keyword(s):  
Cerebrovascular Disease ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Posterior Cerebral Artery ◽  
Sensory Loss ◽  
Homonymous Hemianopia ◽  
Leg Weakness ◽  
Sensory Changes ◽  
The Brain

The video in this chapter explores cerebrovascular disease, and focuses on vascular territories. It discusses the middle cerebral artery (MCA), posterior cerebral artery (PCA), and anterior cerebral artery (ACA), along with the portions of the brain they supply, as well as the different presentations of stroke in the three territories - contralateral weakness, sensory loss, and aphasia in MCA stroke, contralateral homonymous hemianopia in PCA stroke, and contralateral leg weakness and sensory changes in ACA stroke.

Dissection of anterior cerebral artery presenting with cerebral infarction in contralateral frontal lobe

2018 ◽  
Vol 6 (6) ◽  
pp. 185-187
Author(s):  
Motohiro Nomura ◽  
Akira Tamase ◽  
Kentaro Mori ◽  
Yu Iida ◽  
Yuichi Kawabata ◽  
...  
Keyword(s):  
Cerebral Infarction ◽  
Frontal Lobe ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery

Differential effects of long-term hypoxia on norepinephrine turnover in brain stem cell groups

1992 ◽  
Vol 73 (5) ◽  
pp. 1810-1814 ◽  
Author(s):  
V. Soulier ◽  
J. M. Cottet-Emard ◽  
J. Pequignot ◽  
F. Hanchin ◽  
L. Peyrin ◽  
...  
Keyword(s):  
Brain Stem ◽  
Anterior Part ◽  
Posterior Part ◽  
Cell Group ◽  
Hypotensive Drug ◽  
Differential Effects ◽  
Cell Groups ◽  
Noradrenergic Cell Groups ◽  
The Brain

The influence of long-term hypoxia on noradrenergic cell groups in the brain stem was assessed by estimating the changes in norepinephrine (NE) turnover in A1, A2 (subdivided into anterior and posterior parts), A5, and A6 groups in rats exposed to hypoxia (10% O2–90% N2) for 14 days. The NE turnover was decreased in A5 and A6 groups but failed to change significantly in A1. The NE turnover was increased in the posterior part of A2 and remained unaltered in the anterior part. In normoxic rats, the hypotensive drug dihydralazine induced a reverse effect, namely increased NE turnover in anterior A2 and no change in posterior A2. The neurochemical responses to hypoxia were abolished by transection of carotid sinus nerves. The results show that long-term hypoxia exerts differential effects on the noradrenergic cell groups located in the brain stem. Peripheral chemosensory inputs control the hypoxia-induced noradrenergic alterations. The A2 cell group displays a functional subdivision: the posterior part is influenced by peripheral chemosensory inputs, whereas the anterior part may be concerned with barosensitivity.

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