scholarly journals Isolated Hemiatrophy of Occipital Lobe�A Rare Neurological Case

2018 ◽  
Vol 1 (5) ◽  
Author(s):  
Khandaker Abu Talha ◽  
Farhana Selina ◽  
MH Khan Pavel ◽  
Muhammad Shoyab
Keyword(s):  
Occipital Lobe

Emotional Reactivity to Visual Content as Revealed by ERP Component Clustering

2015 ◽  
Vol 29 (4) ◽  
pp. 135-146 ◽  
Author(s):  
Miroslaw Wyczesany ◽  
Szczepan J. Grzybowski ◽  
Jan Kaiser
Keyword(s):  
Emotional Reactivity ◽  
Brain Activity ◽  
Affective State ◽  
Occipital Lobe ◽  
Stimulus Onset ◽  
Emotional States ◽  
Neural Basis ◽  
Temporoparietal Junction ◽  
The Right ◽  
The Impact

Abstract. In the study, the neural basis of emotional reactivity was investigated. Reactivity was operationalized as the impact of emotional pictures on the self-reported ongoing affective state. It was used to divide the subjects into high- and low-responders groups. Independent sources of brain activity were identified, localized with the DIPFIT method, and clustered across subjects to analyse the visual evoked potentials to affective pictures. Four of the identified clusters revealed effects of reactivity. The earliest two started about 120 ms from the stimulus onset and were located in the occipital lobe and the right temporoparietal junction. Another two with a latency of 200 ms were found in the orbitofrontal and the right dorsolateral cortices. Additionally, differences in pre-stimulus alpha level over the visual cortex were observed between the groups. The attentional modulation of perceptual processes is proposed as an early source of emotional reactivity, which forms an automatic mechanism of affective control. The role of top-down processes in affective appraisal and, finally, the experience of ongoing emotional states is also discussed.

OCCIPITAL LOBE EPILEPSY IN CHILDREN: THE CLINICAL SPECTRUM AND OUTCOME

2006 ◽  
Vol 37 (S 1) ◽  
Author(s):  
M Connolly ◽  
R Schukla ◽  
R Gatrill
Keyword(s):  
Occipital Lobe ◽  
Clinical Spectrum ◽  
Occipital Lobe Epilepsy

Importance of Avasthiki Chikitsa in Pakshaghata and its complications: A Clinical Case Report

2017 ◽  
Vol 2 (3) ◽  
Author(s):  
Vishwanath S. Wasedar ◽  
Shilpa S. Biradar
Keyword(s):  
Case Report ◽  
Lower Limb ◽  
Life Style ◽  
Occipital Lobe ◽  
Blood Parameters ◽  
Effective Control ◽  
Research Centre ◽  
Successful Case ◽  
Diet And Exercise ◽  
Loss Of Strength

Purpose: Life style disorders demand a strict regimen throughout one’s life among which Hypertension and Diabetes Mellitus are common. Hence the treatment aims an effective control along with Life style modification. The negligence towards the prescribed life style regimen would lead to many complications among which stroke are most prominent and the prevalence in India is 29%. Though the patient is under strict Anti hypertensive medications still one day he/she will land up in stroke hampering his rest of precious life. Aim: With this understanding a successful case report is presented to highlight the importance of Avasthiki Chikitsa with life style modification in controlling Hypertension and treating Pakshaghata from the root level. Materials and Methods: A 74 years old female patient, known case of HTN and DM was brought on a stretcher to the Panchakarma OPD of KLEU Ayurveda Hospital and Research Centre with the complain of loss of strength in left upper and lower limb associated with inability to speak since 9 days. Her MRI suggested Left Hemiplegia with B/L cerebellar hemorrhagic infract in occipital lobe. Initially treatment commenced with Shiromarmaghata Chikitsa with Shamanoushadhi along with modern medication which the patient had been advised. Later on when the patient started to improve in her blood parameters allied science medications were tapered and gradually stopped excluding her routine medication. After the clearance of Avarana, Panchakarma therapies were administered sequentially at various stage with a meticulous diet and exercise. Results: After 22 days of treatment Diabetes and Hypertension were under control, patient was able to walk with minimal support and speech also improved. Conclusion: A well planned diet along with Ayurvedic therapies based on the Awastha provides encouraging results in treating HTN, DM and Pakshaghata.

scholarly journals Brain Abscess Caused by Nocardia: Case Report and Literature Review

2020 ◽  
Author(s):  
Guilherme Finger ◽  
Maria Eduarda Conte Gripa ◽  
Tiago Paczko Bozko Cecchini ◽  
Tobias Ludwig do Nascimento
Keyword(s):  
Case Report ◽  
Antibiotic Therapy ◽  
Brain Abscess ◽  
Clinical Signs ◽  
Occipital Lobe ◽  
High Morbidity ◽  
Rare Clinical Entity ◽  
Brain Abscesses

AbstractNocardia brain abscess is a rare clinical entity, accounting for 2% of all brain abscesses, associated with high morbidity and a mortality rate 3 times higher than brain abscesses caused by other bacteria. Proper investigation and treatment, characterized by a long-term antibiotic therapy, play an important role on the outcome of the patient. The authors describe a case of a patient without neurological comorbidities who developed clinical signs of right occipital lobe impairment and seizures, whose investigation demonstrated brain abscess caused by Nocardia spp. The patient was treated surgically followed by antibiotic therapy with a great outcome after 1 year of follow-up.

scholarly journals Evening preference correlates with regional brain volumes in the anterior occipital lobe

2021 ◽  
pp. 1-8
Author(s):  
SL. Evans ◽  
MA Leocadio-Miguel ◽  
TP Taporoski ◽  
LM Gomez ◽  
ARVR Horimoto ◽  
...  
Keyword(s):  
Occipital Lobe ◽  
Brain Volumes ◽  
Regional Brain

scholarly journals The role of cochlear implant positioning on MR imaging quality: a preclinical in vivo study with a novel implant magnet system

2021 ◽  
Author(s):  
Pietro Canzi ◽  
Marianna Magnetto ◽  
Anna Simoncelli ◽  
Marco Manfrin ◽  
Federico Aprile ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Cochlear Implant ◽  
Occipital Lobe ◽  
Brain Structures ◽  
Magnet System ◽  
High Positive Correlation ◽  
Imaging Quality ◽  
Signal Void ◽  
Mri Surveillance

Abstract Purposes To investigate the effects for Ultra 3D cochlear implant (CI) positioning on MR imaging quality, looking at a comprehensive description of intracranial structures in cases of unilateral and bilateral CI placement. Methods Four CI angular positions (90°, 120°, 135° and 160°) at 9 cm distance from the outer-ear canal were explored. The 1.5 T MRI assessment included our institutional protocol for the investigation of brain pathologies without gadolinium application. Three investigators (two experienced neuroradiologists and one experienced otoneurosurgeon) independently evaluated the MR findings. A 4-point scale was adopted to describe 14 intracranial structures and to determine which CI positioning allowed the best image quality score and how bilateral CI placement modified MRI scan visibility. Results A high positive correlation was found between the three blinded observers. Structures situated contralateral from the CI showed high-quality values in all four placements. Structures situated ipsilaterally provided results suitable for diagnostic purposes for at least one position. At 90°, artifacts mainly involved brain structures located cranially and anteriorly (e.g., temporal lobe); on the contrary, at 160°, artifacts mostly influenced the posterior fossa structures (e.g., occipital lobe). For the bilateral CI condition, MR imaging examination revealed additional artifacts involving all structures located close to either CI, where there was a signal void/distortion area. Conclusions Suitable unilateral CI positioning can allow the visualization of intracranial structures with sufficient visibility for diagnostic purposes. Bilateral CI positioning significantly deteriorates the anatomical visibility. CI positioning might play a crucial role for patients who need post-operative MRI surveillance.

Long-term visual outcome after microsurgical removal of occipital lobe cavernomas

2012 ◽  
Vol 117 (2) ◽  
pp. 295-301 ◽  
Author(s):  
Juri Kivelev ◽  
Elina Koskela ◽  
Kirsi Setälä ◽  
Mika Niemelä ◽  
Juha Hernesniemi
Keyword(s):  
Visual Field ◽  
Visual Fields ◽  
Visual Field Loss ◽  
Occipital Lobe ◽  
Visual Outcome ◽  
Surgical Removal ◽  
Long Term Outcome ◽  
Visual Field Deficit

Object Cavernomas in the occipital lobe are relatively rare. Because of the proximity to the visual cortex and incoming subcortical tracts, microsurgical removal of occipital cavernomas may be associated with a risk of visual field defects. The goal of the study was to analyze long-term outcome after operative treatment of occipital cavernomas with special emphasis on visual outcome. Methods Of the 390 consecutive patients with cavernomas who were treated at Helsinki University Central Hospital between 1980 and 2011, 19 (5%) had occipital cavernomas. Sixteen patients (4%) were surgically treated and are included in this study. The median age was 39 years (range 3–59 years). Seven patients (56%) suffered from hemorrhage preoperatively, 5 (31%) presented with visual field deficits, 11 (69%) suffered from seizures, and 4 (25%) had multiple cavernomas. Surgery was indicated for progressive neurological deterioration. The median follow-up after surgery was 5.25 years (range 0.5–14 years). Results All patients underwent thorough neuroophthalmological assessment to determine visual outcome after surgery. Visual fields were classified as normal, mild homonymous visual field loss (not disturbing the patient, driving allowed), moderate homonymous visual field loss (disturbing the patient, driving prohibited), and severe visual field loss (total homonymous hemianopia or total homonymous quadrantanopia). At the last follow-up, 4 patients (25%) had normal visual fields, 6 (38%) had a mild visual field deficit, 1 (6%) complained of moderate visual field impairment, and 5 (31%) had severe homonymous visual field loss. Cavernomas seated deeper than 2 cm from the pial surface carried a 4.4-fold risk of postoperative visual field deficit relative to superficial ones (p = 0.034). Six (55%) of the 11 patients presenting with seizures were seizure-free postoperatively. Eleven (69%) of 16 patients had no disability during the long-term follow-up. Conclusions Surgical removal of occipital cavernomas may carry a significant risk of postoperative visual field deficit, and the risk is even higher for deeper lesions. Seizure outcome after removal of these cavernomas appeared to be worse than that after removal in other supratentorial locations. This should be taken into account during preoperative planning.

Detection of Isolated Occipital Lobe Anomalies During Early Childhood

2010 ◽  
Vol 32 (5) ◽  
pp. 451-455 ◽  
Author(s):  
Scott R. Lambert ◽  
Anthony Kriss ◽  
David Taylor
Keyword(s):  
Early Childhood ◽  
Occipital Lobe

The pigment architecture of the human occipital lobe

1977 ◽  
Vol 150 (2) ◽  
pp. 229-250 ◽  
Author(s):  
Heiko Braak
Keyword(s):  
Occipital Lobe
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