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Brain Dynamics Altered by Photic Stimulation in Patients with Alzheimer's Disease and Mild Cognitive Impairment

Wei-Yang Yu, Intan Low, Chien Chen, Jong-Ling Fuh, Li-Fen Chen
2021 Entropy  
Repetitive photic stimulation (PS) is commonly used in routine electroencephalogram (EEG) examinations for rapid assessment of perceptual functioning.  ...  EEG power ratios during PS were estimated as an index of oscillatory responses. Multiscale sample entropy (MSE) was estimated as an index of brain dynamics before, during, and after PS.  ...  Photic stimulation (PS) session performed during routine clinical EEG examination. Pre-and Post-PS restingstate EEG signals were recorded.  ... 
doi:10.3390/e23040427 pmid:33916588 fatcat:perjrsjvczbizahum2yxavpn7e

Adult metachromatic leucodystrophy: an underdiagnosed disease?

M Cerizza, R Nemni, F Tamma
1987 Journal of Neurology, Neurosurgery and Psychiatry  
nerves), as an alternative to multiple sclerosis we considered adult leucodystrophic pathology.  ...  EEG showed persistence of the left centro-temporal discharges and generalised spike and wave discharges evoked by intermittent photic stimulation.  ... 
doi:10.1136/jnnp.50.12.1710 pmid:3437317 pmcid:PMC1032630 fatcat:ibecywwb5rhhln5flipzeiknvm

Epilepsy in Tuberous Sclerosis: Phenotypes, Mechanisms, and Treatments

Julian Sampson, Anurag Saxena
2015 Seminars in neurology  
Acknowledgments The authors' research is supported by Wales Gene Park, the Tuberous Sclerosis Association, and Novaris Pharmaceuticals.  ...  Eye opening or photic stimulation do not affect the discharges.  ...  Recent research has shown that many (if not all) of the major manifestations of TSC result from overactivation of mTORC1 signaling.  ... 
doi:10.1055/s-0035-1552616 pmid:26060906 fatcat:ohdcdwwg6fdqfbvqnkhffhpmfi

A necropsied case of Machado-Joseph disease with a hyperintense signal of transverse pontine fibres on long TR sequences of magnetic resonance images

1998 Journal of Neurology, Neurosurgery and Psychiatry  
patients with multiple sclerosis and controls from the Southampton area.  ...  A video-EEG showed brief generalised polyspike and wave discharges only during intermittent photic stimulation (figure). There were no spontaneous or hyperventilation induced discharges.  ... 
doi:10.1136/jnnp.64.1.140 pmid:9436751 pmcid:PMC2169922 fatcat:wi4nheiwq5eilmsn63j7wkdaua

Risperidone in levodopa induced dyskinesiae

1998 Journal of Neurology, Neurosurgery and Psychiatry  
patients with multiple sclerosis and controls from the Southampton area.  ...  A video-EEG showed brief generalised polyspike and wave discharges only during intermittent photic stimulation (figure). There were no spontaneous or hyperventilation induced discharges.  ... 
doi:10.1136/jnnp.64.1.135 pmid:9436745 pmcid:PMC2169917 fatcat:g7inao3o5fdftadjwyh2uiqgwu

A case of childhood Kufs' disease

M A Barthez-Carpentier, C Billard, J Maheut, J J Santini, M M Ruchoux
1991 Journal of Neurology, Neurosurgery and Psychiatry  
EEG sensitivity to photic stimulation of the type seen in this patient is very unusual. It has been already reported in several cases5"7 and is likely to be of diagnostic significance.  ...  Hemiageusia: an unusual presentation of multiple sclerosis Patients with multiple sclerosis (MS) rarely complain of taste disturbances, although electrogustatory examinations often demonstrate dysfunction  ... 
doi:10.1136/jnnp.54.7.655-a pmid:1654398 pmcid:PMC1014446 fatcat:eagzjcgsyradlkrfzw2n24dvji

Review of Epilepsy - Etiology, Diagnostic Evaluation and Treatment

Hae Won Shin Valerie Jewells
2014 International Journal of Neurorehabilitation  
Multiple diagnostic tools are used to identify and classify the seizure type/syndrome, etiology and localization of seizures, including electroencephalogram (EEG), magnetic resonance imaging (MRI), positron  ...  The economic impact of epilepsy represents estimated direct and indirect costs of 12.5 billion dollars per year.  ...  In addition, various activation procedures such as hyperventilation, photic stimulation and sleep deprivation can increase the sensitivity of the test [21] .  ... 
doi:10.4172/2376-0281.1000130 fatcat:gzlmrcgarbef7kfmx43c55i7nq

Inhibiting Epileptiform Activity in Cognitive Disorders: Possibilities for a Novel Therapeutic Approach

Andras Attila Horvath, Emoke Anna Csernus, Sara Lality, Rafal M. Kaminski, Anita Kamondi
2020 Frontiers in Neuroscience  
Cognitive impairment is a common and seriously debilitating symptom of various mental and neurological disorders including autism, attention deficit hyperactivity disorder, multiple sclerosis, epilepsy  ...  The aim of our review is to describe the data on the prevalence of epileptiform activity in various cognitive disorders, to summarize the current knowledge of the mechanisms of epileptic activity in relation  ...  epileptiform discharges in multiple sclerosis.  ... 
doi:10.3389/fnins.2020.557416 pmid:33177974 pmcid:PMC7593384 fatcat:5tbbslb2urhrff2xmm4w6ub6dm

Resting state EEG abnormalities in autism spectrum disorders

Jun Wang, Jamie Barstein, Lauren E Ethridge, Matthew W Mosconi, Yukari Takarae, John A Sweeney
2013 Journal of Neurodevelopmental Disorders  
Autism spectrum disorders (ASD) are a group of complex and heterogeneous developmental disorders involving multiple neural system dysfunctions.  ...  Resting-state EEG studies of ASD suggest a U-shaped profile of electrophysiological power alterations, with excessive power in low-frequency and high-frequency bands, abnormal functional connectivity,  ...  Acknowledgement Funding This study was funded by the NIMH Autism Center of Excellence 1P50HD055751-01, K23MH092696, K01MH087720, Department of the Army award AR100276, and Autism Speaks.  ... 
doi:10.1186/1866-1955-5-24 pmid:24040879 pmcid:PMC3847481 fatcat:mrws3bs5rrcc7lipwnoaqg7s5m

Electroencephalogram Coherence Patterns in Autism: An Updated Review

Sophie Schwartz, Riley Kessler, Thomas Gaughan, Ashura W. Buckley
2017 Pediatric Neurology  
, and setting of EEG recording.  ...  Careful analysis of electrophysiological connectivity patterns using EEG coherence may provide a way to probe the resulting differences in neurological function between people with and without autism.  ...  Intermittent Photic Stimulation Intermittent Photic Stimulation (IPS) has been used on several occasions by one group of researchers in particular to measure rhythmic oscillatory activity in individuals  ... 
doi:10.1016/j.pediatrneurol.2016.10.018 pmid:28065825 pmcid:PMC6127859 fatcat:5it7sb66pvajle35de3nd2ucb4

Electroencephalography and the general practitioner

1958 The Journal of the American Osteopathic Association  
In obscure disorders such as multiple sclerosis, the EEG must be run serially.  ...  Some cf the tech- nics used are: hyperventilation, photic stimulation, sleep, chemical stimulation (most commonly produced by the intravenous injection of Metrazol), and a com- bination of photic and Metrazol  ... 
pmid:13538784 fatcat:l74cduqwefa53nzfpisuzbbq2q

Realizing the Translational Promise of Psychophysiological Research in ASD

J. C. McPartland, R. Bernier, M. South
2014 Journal of Autism and Developmental Disorders  
A sample of 14 school-aged boys with ASD in Lazarev and colleagues' study demonstrated reduced interhemispheric coherence during intermittent photic stimulation.  ...  Stamoulis examined EEG rhythms to characterize potential neurodevelopmental delay in children born with tuberous sclerosis complex.  ... 
doi:10.1007/s10803-014-2325-1 pmid:25429873 pmcid:PMC4312201 fatcat:vzj3j5yzefbsrgimjzvjq2jmfq

Optical coherence tomography parameters in patients with photosensitive juvenile myoclonic epilepsy

Yasemin Bicer Gomceli, Berna Dogan, Fatma Genc, Elif Uygur, Deniz Turgut Coban, Abidin Erdal, Muhammed Kazım Erol
2016 Seizure  
The authors have no conflicts of interest in regard to this research or its funding. None of the authors has any conflict of interest to disclose.  ...  Conflict of interest All authors have read and approved the manuscript and take for responsibility for its content.  ...  Photosensitivity or photoparoxysmal response (PPR) is defined as the presence of an abnormal response to intermittent photic stimulation (IPS) during an EEG [2] and [3] .  ... 
doi:10.1016/j.seizure.2015.12.014 pmid:26794008 fatcat:qexdtlbadzgupj5lf3ohser6we

Epilepsy in Mitochondrial Disorders [chapter]

Silvana Franceschetti, Graziella Uziel, Eleonora Lamantea, Gianfranco Carrara, Carlo Antozzi, Massimo Zeviani, Laura Canafogli
2011 Novel Aspects on Epilepsy  
C: Intermittent photic stimulation (IPS) induces an increase of the epileptic discharges. Fig. 2.  ...  In both maternal and autosomal inherited MEs, single or multiple defects of the respiratory chain can be detected in the blood cells or muscular specimens.  ...  Therefore, we introduce novel aspects of epilepsy related to its impact on reproductive functions, oral health and epilepsy secondary to tuberous sclerosis, mithocondrial disorders and lisosomal storage  ... 
doi:10.5772/22014 fatcat:75rir6yrh5c5hdyttduxfrzsem

Early and Late-Onset Epilepsy in Autism: High Rate of Secondarily Generalized Seizures

Tomoyuki Takano, Chihiro Sawai
2014 Autism - Open Access  
We detected two peaks of seizure onset in the patients with epilepsy, one in early childhood and one in adolescence, with a high incidence of West syndrome (p=0.005) in the early-onset group and a high  ...  The purpose of this study was to better characterize the features of early and late-onset epilepsy in individuals with autism.  ...  Activation procedures with photic stimulation and hyperventilation were routinely performed if the patient was able to cooperate.  ... 
doi:10.4172/2165-7890.1000130 fatcat:6dzkvknfqnh4pjrrhv7dtbe2he
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