A Case of Musicogenic Epilepsy

2021 ◽  
Author(s):  
Ankkita Sharma Bhandari ◽  
Mandaville Gourie-Devi ◽  
Praveen Kumar ◽  
Laxmi Khanna
Keyword(s):  
Temporal Lobe ◽  
Lifestyle Modification ◽  
Abnormal Signal ◽  
Recent Onset ◽  
History Of ◽  
Abnormal Signal Intensity ◽  
Musicogenic Epilepsy ◽  
Electroencephalogram Eeg ◽  
The Brain ◽  
Video Eeg

AbstractMusicogenic epilepsy is a relatively rare form of epilepsy characterized by seizures triggered by specific music experiences, with an estimated prevalence of 1/10,000,000 population. We report a case of 12-year-old boy with a history of recent onset focal seizures associated with an aura of formed visual hallucinations, feeling of familiarity (déjà vu), and impending fear lasting for seconds to a minute followed by eye blinking, oral automatisms, and unresponsiveness for almost 15 minutes. These episodes, most often, were provoked by music. Video electroencephalogram (EEG) done in our institute was suggestive of reflex musicogenic epilepsy arising from the left anterior temporal lobe. Magnetic resonance imaging of the brain 3T with epilepsy protocol confirmed video EEG findings, with an abnormal signal intensity in the left hippocampal and mesial temporal lobe. Treatment included lifestyle modification and antiepileptic drugs.

scholarly journals Posterior fossa involvement in a recurrent gliosarcoma

2012 ◽  
Vol 03 (01) ◽  
pp. 60-64 ◽  
Author(s):  
Srikant Balasubramaniam ◽  
Devendra K Tyagi ◽  
Hemant V Sawant ◽  
Sridhar Epari
Keyword(s):  
Posterior Fossa ◽  
Temporal Lobe ◽  
Radical Excision ◽  
Who Grade ◽  
True Nature ◽  
Recent Onset ◽  
First Case ◽  
Aggressive Tumors ◽  
The Brain ◽  
Tomography Scan

ABSTRACTGliosarcoma (GSM) is a WHO grade 4 tumor and a variant of glioblastoma multiforme with predilection for the temporal lobe. We record, perhaps the first case in literature, of a temporal lobe GSM with recurrence involving the posterior fossa. A 50-year-old man presented to us with headache, vomiting, and lethargy of relatively recent onset. Magnetic resonance imaging revealed a well-circumscribed lesion in the left temporal lobe for which left temporal craniotomy with radical excision of the tumor was performed. Histopathology was suggestive of GSM. He presented to us within a month of the first surgery with a large recurrence involving the temporal lobe. He underwent a second surgery with radical excision of the tumor. Histopathology was confirmatory of GSM. He was administered concomitant chemotherapy and radiotherapy. Within a fortnight of starting adjuvant therapy, the bone flap started bulging and a repeat computed tomography scan revealed a large recurrence extending into the posterior fossa. The patient′s relatives refused consent for third surgery and he finally succumbed on postoperative day 21. GSMs are aggressive tumors that have a temporal lobe predilection, but they may present anywhere in the brain. Detailed studies on larger cohort of cases are needed to understand the true nature of these biphasic tumors.

Musicogenic Epilepsy: Clinical Features, Pathophysiology, and Review of Literature

2019 ◽  
Vol 08 (04) ◽  
pp. 109-113
Author(s):  
Ahmad Marashly
Keyword(s):  
Clinical Features ◽  
Temporal Lobe ◽  
Functional Imaging ◽  
Review Of Literature ◽  
Reflex Epilepsy ◽  
Seizure Onset ◽  
Processing Variable ◽  
Musicogenic Epilepsy ◽  
The Brain ◽  
Structural Brain

AbstractMusicogenic epilepsy is a special type of reflex epilepsy characterized by recurring seizures in response to hearing-specific musical triggers. Clinical features include focal dyscognitive seizures with typical temporal lobe semiology, normal structural brain imaging, functional imaging abnormalities in wide regions of the brain responsible for emotional and musical processing, variable locations of seizure onset within the temporal lobe, and in refractory cases good response to surgery. Musicogenic epilepsy is poorly understood from a pathophysiological standpoint and thus reflects the complexity of brain networks responsible for auditory, emotional, and cognitive functions.

scholarly journals Carotid-Cavernous Fistula Associated with an Intracranial Lesion Caused by Cortical Venous Reflux

2006 ◽  
Vol 12 (1_suppl) ◽  
pp. 167-173 ◽  
Author(s):  
S. Takahashi ◽  
I. Sakuma ◽  
T. Otani ◽  
K. Yasuda ◽  
N. Tomura ◽  
...  
Keyword(s):  
Signal Intensity ◽  
Venous Drainage ◽  
Brain Parenchyma ◽  
Venous Congestion ◽  
Venous Reflux ◽  
Carotid Cavernous Fistula ◽  
Abnormal Signal ◽  
Cortical Venous Reflux ◽  
Abnormal Signal Intensity ◽  
The Brain

Digital subtraction angiography (DSA) and magnetic resonance imaging (MRI) findings in 20 patients with carotid-cavernous fistula (CCF; 3 direct CCFs and 17 indirect CCFs) were retrospectively reviewed to evaluate venous drainage patterns that may cause intracerebral haemorrhage or venous congestion of the brain parenchyma. We evaluated the relationship between cortical venous reflux and abnormal signal intensity of the brain parenchyma on MRI. Cortical venous reflux was identified on DSA in 12 of 20 patients (60.0%) into the superficial middle cerebral vein (SMCV; n=4), the uncal vein (n=2), the petrosal vein (n=2), the lateral mesencephalic vein (LMCV; n=1), the anterior pontomesencephalic vein (APMV; n=1), both the APMV and the petrosal vein (n=1) and both the uncal vein and the SMCV (n=1). Features of venous congestion, such as tortuous and engorged veins, focal staining and delayed appearance of the veins, were demonstrated along the region of cortical venous reflux in the venous phase of internal carotid or vertebral arteriography in six of 20 patients (30.0%). These findings were not observed in the eight CCF patients who did not demonstrate cortical venous reflux. MRI revealed abnormal signal intensity of the brain parenchyma along the region with cortical venous reflux in four of 20 indirect CCF patients (20%). Of these four patients, one presented with putaminal haemorrhage, while the other three presented with hyperintensity of the pons, the middle cerebellar peduncle or both on T2-weighted images, reflecting venous congestion. The venous drainage routes were obliterated except for cortical venous reflux in these four patients and the patients without abnormal signal intensity on MRI had other patent venous outlets in addition to cortical venous reflux. CCF is commonly associated with cortical venous reflux. The obliteration or stenosis of venous drainage routes causes a converging venous outflow that develops into cortical venous reflux and results in venous congestion of the brain parenchyma or intracerebral haemorrhage. Hyperintensity of brain parenchyma along the region of cortical venous reflux on T2-weighted images reflects venous congestion and is the crucial finding that indicates concentration of venous drainage into cortical venous reflux.

Carotid-Cavernous Fistula Associated with an Intracranial Lesion Caused by Cortical Venous Reflux

1995 ◽  
Vol 8 (6) ◽  
pp. 167-173
Author(s):  
S. Takahashi ◽  
I. Sakuma ◽  
T. Otani ◽  
K. Yasuda ◽  
N. Tomura ◽  
...  
Keyword(s):  
Signal Intensity ◽  
Venous Drainage ◽  
Brain Parenchyma ◽  
Venous Congestion ◽  
Venous Reflux ◽  
Carotid Cavernous Fistula ◽  
Abnormal Signal ◽  
Cortical Venous Reflux ◽  
Abnormal Signal Intensity ◽  
The Brain

Digital subtraction angiography (DSA) and magnetic resonance imaging (MRI) findings in 20 patients with carotid-cavernous fistula (CCF; 3 direct CCFs and 17 indirect CCFs) were retrospectively reviewed to evaluate venous drainage patterns that may cause intracerebral haemorrhage or venous congestion of the brain parenchyma. We evaluated the relationship between cortical venous reflux and abnormal signal intensity of the brain parenchyma on MRI. Cortical venous reflux was identified on DSA in 12 of 20 patients (60.0%) into the superficial middle cerebral vein (SMCV; n=4), the uncal vein (n=2), the petrosal vein (n=2), the lateral mesencephalic vein (LMCV; n=1), the anterior pontomesencephalic vein (APMV; n=1), both the APMV and the petrosal vein (n=1) and both the uncal vein and the SMCV (n=1). Features of venous congestion, such as tortuous and engorged veins, focal staining and delayed appearance of the veins, were demonstrated along the region of cortical venous reflux in the venous phase of internal carotid or vertebral arteriography in six of 20 patients (30.0%). These findings were not observed in the eight CCF patients who did not demonstrate cortical venous reflux. MRI revealed abnormal signal intensity of the brain parenchyma along the region with cortical venous reflux in four of 20 indirect CCF patients (20%). Of these four patients, one presented with putaminal haemorrhage, while the other three presented with hyperintensity of the pons, the middle cerebellar peduncle or both on T2-weighted images, reflecting venous congestion. The venous drainage routes were obliterated except for cortical venous reflux in these four patients and the patients without abnormal signal intensity on MRI had other patent venous outlets in addition to cortical venous reflux. CCF is commonly associated with cortical venous reflux. The obliteration or stenosis of venous drainage routes causes a converging venous outflow that develops into cortical venous reflux and results in venous congestion of the brain parenchyma or intracerebral haemorrhage. Hyperintensity of brain parenchyma along the region of cortical venous reflux on T2-weighted images reflects venous congestion and is the crucial finding that indicates concentration of venous drainage into cortical venous reflux.

scholarly journals Ascending Reticular Activating System of the Brain

2016 ◽  
Vol 2 (4) ◽  
pp. 275-285 ◽  
Author(s):  
Vladimir M. Kovalzon
Keyword(s):  
Cortical Activation ◽  
Low Molecular Weight ◽  
Second Stage ◽  
Ascending Reticular Activating System ◽  
Reticular Activating System ◽  
History Of ◽  
Two Stages ◽  
Electroencephalogram Eeg ◽  
The Brain ◽  
Arousal Reaction

There were two stages in the history of the studies on ascending reticular activating system of the brain (ARAS). The first stage began with the ARAS discovery by Magoun and Moruzzi and the following investigations using the methods of stimulation and lesion at that time mainly in acute cats. These studies led to the hypothesis of a “diffuse” and “unspecific” ARAS of the brain stem. The second stage was associated with using more precise neurophysiological and histochemical methods mainly in chronically operated free-moving cats and rats. By 2010, the idea of the ARAS as an organized hierarchy of the cerebral “waking centers” distributed along the entire cerebral axis and releasing all the known neuromediators of low molecular weight together with the most important neuropeptides was formulated. To date, the aforementioned hypothesis has been revised again. The glutamatergic activating system has been discovered and described in detail. Presumably, this system is responsible for the appearance of electroencephalogram (EEG) arousal reaction and maintenance of the neocortex in the state of tonic depolarization during wakefulness and rapid eye movement (REM) sleep. Its destruction results in a deep comatose-like state. At the same time, the activity of all other “waking centers” is probably the result of the cortical activation.

Cochlear implantation in a patient with grand mal epilepsy

1998 ◽  
Vol 112 (6) ◽  
pp. 567-569 ◽  
Author(s):  
Judith Szilvassy ◽  
Jeno Czigner ◽  
Istvan Somogyi ◽  
Jozsef Jori ◽  
Jozsef G. Kiss ◽  
...  
Keyword(s):  
Hearing Aids ◽  
Wave Activity ◽  
Epileptic Focus ◽  
Hearing Improvement ◽  
Acoustic Nerve ◽  
Grand Mal ◽  
History Of ◽  
Electroencephalogram Eeg ◽  
The Brain ◽  
Stimulation Of

AbstractA case is reported in which a Nucleus 22 channel intracochlear implant was used to treat a deaf Hungarian woman (aged 37 years) with a 34-year history of grand mal (GM) epilepsy maintained on carbamazepinediazepam combination therapy who had not benefited from conventional hearing aids. Pre-operative electrical stimulation of the acoustic nerve, however, exhibited a good nerve function with no evidence of abnormal waveforms in the electroencephalogram (EEG). Successful intracochlear insertion of the 22 electrode resulted in a 40 dB hearing improvement at frequencies 250–2000 Hz in the implanted ear with no signs of pathologic wave activity at either the previously recognized epileptic focus (fronto-precentral region) or indeed, in other regions of the brain at use of the implant. We conclude that intracochlear implantation per se is not a hazardous intervention in patients with fronto-precentral epileptic foci.

scholarly journals Diagnostic efficiency of monitoring methods of brain bioelectric activity in temporal lobe pharmacoresistant epilepsy

2021 ◽  
Vol 8 (5) ◽  
pp. 21-28
Author(s):  
E. V. Marchenko ◽  
A. M. Aleksandrov ◽  
G. V. Odintsova ◽  
A. A. Chukhlovin
Keyword(s):  
Surgical Treatment ◽  
Temporal Lobe ◽  
Invasive Monitoring ◽  
Diagnostic Efficiency ◽  
Eeg Monitoring ◽  
Bioelectric Activity ◽  
Diagnostic Efficacy ◽  
Structural Epilepsy ◽  
The Brain ◽  
Video Eeg

Background. The basis of pre-surgical neurophysiological examinations of patients with pharmaco-resistant structural epilepsy is the method of monitoring bioelectrical activity of the brain, video-electroencephalographic monitoring and, if indicated, long-term invasive monitoring.Objective. The goal of the study is to estimate the diagnostic efficacy of the methods used for monitoring of the brain bioelectric activity on the basis of longterm results of surgical treatment of patients with temporal structural pharmaco-resistant epilepsy.Design and methods. The study included 61 patients with temporal lobe pharmaco-resistant epilepsy, who were divided into two groups: performance of video-EEG monitoring only (33 patients) and the additional use of invasive monitoring for the localization of the epileptogenic zone (28 patients). Each group was divided into subgroups depending on the outcome of surgical treatment: patients, in whom seizures ceased (Engel 1) and patients in whom seizures persisted to some degree (Engel 2-3-4). Invasive monitoring with ictal event recording was chosen as the reference method to calculate diagnostic efficacy.Results. Invasive monitoring was performed as part of the pre-surgical evaluation of patients with temporal lobe pharmaco-resistant epilepsy with a higher sensitivity (72.7 %) and accuracy (82.4 %) than video-EEG monitoring (sensitivity 50 %, accuracy 45.9 %).Conclusion. In simple monofocal variants of structural epilepsy, video-EEG monitoring has a sufficient level of diagnostic efficiency. The phenomenon of neurophysiological phenotypes convergence is responsible for the reduced diagnostic efficacy of noninvasive and invasive monitoring.

scholarly journals Multiple High Grade Rhabdoid Papillary Meningiomas Mimicking Choroid Plexus Carcinoma: A Case Report

2019 ◽  
Vol 14 (4) ◽  
pp. 338-341
Author(s):  
Arezoo Eftekhar-Javadi ◽  
Dorna Motevalli ◽  
Ahmad Pourrashidi Boshrabadi ◽  
Hedieh Moradi Tabriz ◽  
Hoda Asefi
Keyword(s):  
Tumor Cells ◽  
Temporal Lobe ◽  
Cerebellopontine Angle ◽  
High Grade ◽  
Papillary Meningioma ◽  
Radiologic Findings ◽  
Eosinophilic Cytoplasm ◽  
History Of ◽  
The Right ◽  
The Brain

Rhabdoid papillary meningioma is an uncommon aggressive variant of meningioma which has the potential to metastasize and spread throughout the brain and even out of the cranium. Herein, we present recurrence of the brain tumor in a 26-year-old woman. The patient had history of the surgery for two lesions in the right temporal lobe and the left cerebellopontine angle. Imaging showed three lesions in the right temporal lobe, the right occipital horn wall, and the left cerebellopontine angle. These radiologic findings were mostly suggestive of atypical meningioma. In the surgical view, the mass was solid-cystic reddish Cauliflower-shaped in the right temporal lobe attaching to the temporal horn. The microscopic examination showed a cellular neoplasm with the sheet-like and papillary growth pattern. Individual cells had vesicular nuclei some with prominent nucleoli and eosinophilic cytoplasm. The areas of the tumor cells showed round eccentric nuclei and prominent nucleoli with eosinophilic cytoplasm. Immunohistochemistry studies showed diffuse positivity of tumor cells with Vimentin, EMA, and S100. The overall clinical, radiological and histopathological examinations were compatible with high grade rhabdoid-papillary meningiomas. In the present case study, we discuss imaging and histomorphological features of this rare entity of meningiomas.

Exploring the abnormal signal transduction mediated internet addiction and gaming disorders

2020 ◽  
Vol 15 ◽  
Author(s):  
Bhumika Chauhan ◽  
Sisir Nandi
Keyword(s):  
Signal Transduction ◽  
Internet Addiction ◽  
Internet Gaming Disorder ◽  
Online Data ◽  
Abnormal Signal ◽  
Internet Gaming ◽  
The World ◽  
Loss Of Appetite ◽  
Sleeping Disorder ◽  
The Brain

: The world is connected by the internet. It is very useful because we use Google to find out any new topic, to search new places, to quest updated research, and to get knowledge for learnng. The person around the world can communicate with each other through the Google video conference talk. Internet is frequently used in smartphones, laptops, desktop, and tablet. Excessive affinity towards internet-based online data collection, downloading pictures, videos, cyber relationships, and social media may produce addiction disorders followed by different symptoms such as behaviors change, mind disturbance, depression, anxiety, loss of appetite hyperactivity, sleeping disorder, headache, visual fatigueness, trafficking of memory, attention-deficit, loss of efficiency in work and social detachment which may be caused by an imbalance of neurotransmitters. This is very difficult to control because of abnormal signal transduction in the brain. The present study is an attempt to discuss internet addiction disorder (IAD), internet gaming disorder (IGD), and give awareness to society to get rid of this addiction.

scholarly journals L2HGDH Missense Variant in a Cat with L-2-Hydroxyglutaric Aciduria

Genes ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 682
Author(s):  
Matthias Christen ◽  
Nils Janzen ◽  
Anne Fraser ◽  
Adrian C. Sewell ◽  
Vidhya Jagannathan ◽  
...  
Keyword(s):  
Current Knowledge ◽  
Genetic Defect ◽  
Clinical Signs ◽  
Missense Variant ◽  
Microcytic Anemia ◽  
Abnormal Behavior ◽  
Functional Candidate Gene ◽  
History Of ◽  
The Brain ◽  
Hydroxyglutaric Acid

A 7-month-old, spayed female, domestic longhair cat with L-2-hydroxyglutaric aciduria (L-2-HGA) was investigated. The aim of this study was to investigate the clinical signs, metabolic changes and underlying genetic defect. The owner of the cat reported a 4-month history of multiple paroxysmal seizure-like episodes, characterized by running around the house, often in circles, with abnormal behavior, bumping into obstacles, salivating and often urinating. The episodes were followed by a period of disorientation and inappetence. Neurological examination revealed an absent bilateral menace response. Routine blood work revealed mild microcytic anemia but biochemistry, ammonia, lactate and pre- and post-prandial bile acids were unremarkable. MRI of the brain identified multifocal, bilaterally symmetrical and T2-weighted hyperintensities within the prosencephalon, mesencephalon and metencephalon, primarily affecting the grey matter. Urinary organic acids identified highly increased levels of L-2-hydroxyglutaric acid. The cat was treated with the anticonvulsants levetiracetam and phenobarbitone and has been seizure-free for 16 months. We sequenced the genome of the affected cat and compared the data to 48 control genomes. L2HGDH, coding for L-2-hydroxyglutarate dehydrogenase, was investigated as the top functional candidate gene. This search revealed a single private protein-changing variant in the affected cat. The identified homozygous variant, XM_023255678.1:c.1301A>G, is predicted to result in an amino acid change in the L2HGDH protein, XP_023111446.1:p.His434Arg. The available clinical and biochemical data together with current knowledge about L2HGDH variants and their functional impact in humans and dogs allow us to classify the p.His434Arg variant as a causative variant for the observed neurological signs in this cat.

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