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https://www.readbyqxmd.com/read/27894782/transitioning-eeg-experiments-away-from-the-laboratory-using-a-raspberry-pi-2
#1
Jonathan W P Kuziek, Axita Shienh, Kyle E Mathewson
BACKGROUND: Electroencephalography (EEG) experiments are typically performed in controlled laboratory settings to minimise noise and produce reliable measurements. These controlled conditions also reduce the applicability of the obtained results to more varied environments and may limit their relevance to everyday situations. NEW METHOD: Advances in computer portability may increase the mobility and applicability of EEG results while decreasing costs. In this experiment we show that stimulus presentation using a Raspberry Pi 2 computer provides a low cost, reliable alternative to a traditional desktop PC in the administration of EEG experimental tasks...
November 25, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27878436/peripheral-nerve-ultrasound-scoring-systems-benchmarking-and-comparative-analysis
#2
Alexander Grimm, Tim W Rattay, Natalie Winter, Hubertus Axer
Ultrasound of the nerves is an additive diagnostic tool to evaluate polyneuropathy. Recently, the need for standardized scoring systems has widely been discussed; different scores are described so far. Therefore, 327 patients with polyneuropathy were analyzed by ultrasound in our laboratory. Consequently, several ultrasound scoring tools were applied, i.e., the nerve pattern classification according to Padua et al. in all patients with CIDP and variants, the Bochum ultrasound score (BUS) and the neuritis ultrasound protocol in immune-mediated neuritis, the ultrasound pattern sum score, the homogeneity score, and the nerve enlargement distribution score in all neuropathies if possible...
November 22, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27867941/familial-influences-on-mismatch-negativity-and-its-association-with-plasma-glutamate-level-a-magnetoencephalographic-study-in-twins
#3
Yukika Nishimura, Yuki Kawakubo, Motomu Suga, Kenji Hashimoto, Yuichi Takei, Kunio Takei, Hideyuki Inoue, Masato Yumoto, Ryu Takizawa, Kiyoto Kasai
Mismatch negativity (MMN) or its magnetic counterpart (magnetic mismatch negativity; MMNm) is regarded as a promising biomarker for schizophrenia. Previous electroencephalographic studies of MMN have demonstrated a moderate-to-high heritability for MMN amplitudes. N-methyl-D-aspartate receptor-dependent glutamatergic neurotransmission is implicated in MMN generation. We hypothesized that the differences between identical twins in MMNm variables might be associated with differences in plasma levels of amino acids involved in glutamatergic neurotransmission...
October 2016: Molecular Neuropsychiatry
https://www.readbyqxmd.com/read/27863627/a-mismatch-negativity-study-in-mandarin-speaking-children-with-sensorineural-hearing-loss
#4
Mingfu Fu, Liyan Wang, Mengchao Zhang, Ying Yang, Xibin Sun
OBJECTIVE: a) To examine the effects of sensorineural hearing loss on the discriminability of linguistic and non-linguistic stimuli at the cortical level, and b) to examine whether the cortical responses differ based on the chronological age at intervention, the degree of hearing loss, or the acoustic stimulation mode in children with severe and profound hearing loss. METHODS: Mismatch negativity (MMN) responses were collected from 43 children with severe and profound bilateral sensorineural hearing loss, and 20 children with normal hearing (age: 3-6 years)...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27862172/investigation-of-brain-electrophysiological-properties-among-heroin-addicts-quantitative-eeg-and-event-related-potentials
#5
Farid Motlagh, Fatimah Ibrahim, Rusdi Rashid, Tahereh Seghatoleslam, Hussain Habil
This study aims to introduce a new approach of a comprehensive paradigm to evaluate brain electrophysiological properties among addicts. Electroencephalographic spectral power as well as amplitudes and latencies of mismatch negativity (MMN), P300, and P600 components were evaluated among 19 male heroin addicts and 19 healthy nonsmoker subjects using a paradigm consisting of three subparadigms, namely (1) digit span Wechsler test, (2) auditory oddball, and (3) visual cue-reactivity oddball paradigms. Task 1 provided auditory P300 and P600 in association with working memory...
November 8, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27836184/serological-study-using-glycoarray-for-detecting-antibodies-to-glycolipids-and-glycolipid-complexes-in-immune-mediated-neuropathies
#6
Miyuki Morikawa, Motoi Kuwahara, Rino Ueno, Makoto Samukawa, Yukihiro Hamada, Susumu Kusunoki
We performed a serological investigation using glycoarray in Guillain-Barré syndrome (GBS), chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), and multifocal motor neuropathy (MMN). Antibodies to 10 glycolipids and 45 glycolipid complexes were tested. Anti-GM1/sulfatide and anti-GA1/sulfatide IgG antibodies were common in GBS (20.0% and 19.0%, respectively). Anti-GQ1b/sulfatide IgG antibody was detected in 14.0% of GBS patients. IgG antibodies to antigens containing GQ1b were significantly correlated with ophthalmoplegia in GBS (p<0...
November 2, 2016: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/27825609/cognitive-impairments-in-patients-with-first-episode-psychosis-the-relationship-between-neurophysiological-and-neuropsychological-assessments
#7
Isabel Morales-Muñoz, Rosa Jurado-Barba, Sara Fernández-Guinea, María José Álvarez-Alonso, Roberto Rodríguez-Jiménez, Miguel Angel Jiménez-Arriero, Gabriel Rubio
Cognitive deficits in schizophrenia have been widely reported. Neurophysiological and neuropsychological assessments have been conducted to study these impairments. Event-related potentials (ERPs) are relevant markers of cognitive deficits in schizophrenia, and reductions in specific ERP components have been found. The MATRICS Consensus Cognitive Battery (MCCB) was developed to obtain a consensus battery for the assessment of cognitive deficits in schizophrenia. Here, we aimed to study modulations of several ERP components in first episode psychosis (FEP)...
November 4, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27812749/visual-mismatch-negativity-to-masked-stimuli-presented-at-very-brief-presentation-rates
#8
Maria Flynn, Alki Liasis, Mark Gardner, Tony Towell
Mismatch negativity (MMN) has been characterised as a 'pre-attentive' component of an event-related potential (ERP) that is related to discrimination and error prediction processes. The aim of the current experiment was to establish whether visual MMN could be recorded to briefly presented, backward and forward masked visual stimuli, given both below and above levels of subjective experience. Evidence of visual MMN elicitation in the absence of the ability to consciously report stimuli would provide strong evidence for the automaticity of the visual MMN mechanism...
November 3, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27798335/a-prenatal-multiple-micronutrient-supplement-produces-higher-maternal-vitamin-b-12-concentrations-and-similar-folate-ferritin-and-zinc-concentrations-as-the-standard-60-mg-iron-plus-400-%C3%AE-g-folic-acid-supplement-in-rural-bangladeshi-women
#9
Shirin Ziaei, Anisur Rahman, Rubhana Raqib, Bo Lönnerdal, Eva-Charlotte Ekström
BACKGROUND: The effects of prenatal food and micronutrient supplementation on maternal micronutrient status are not well known. OBJECTIVE: We compared the efficacy and effectiveness of 3 different micronutrient supplements on maternal micronutrient status when combined with food supplementation. METHODS: In the MINIMat (Maternal and Infant Nutrition Intervention, Matlab) trial in Bangladesh, 4436 pregnant women were randomly assigned to daily intake of 3 types of micronutrient capsules: 30 mg Fe and 400 μg folic acid (Fe30F), 60 mg Fe and 400 μg folic acid (Fe60F), or multiple micronutrient supplements (MMNs) combined with early (week 9 of pregnancy) or usual (week 20 of pregnancy) food supplementation in a 2 by 3 factorial design...
October 19, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27796190/postoperative-physical-therapy-management-of-tendon-transfer-for-digital-wrist-extension-due-to-multifocal-motor-neuropathy
#10
Steve Volpe
Study Design Case report. Background Multifocal motor neuropathy is a progressive motor nerve disorder characterized by muscle weakness in the extremities. Muscle imbalance and weakness can become so severe that the involved extremity can be rendered nonfunctional. The purpose of this case report is to describe the physical therapy postoperative management of a patient who underwent a multiple tendon transfer to correct the loss of digital/wrist extension of the right upper extremity. Case Description A 38-year-old woman with a medical diagnosis of multifocal motor neuropathy, which caused muscle imbalance and weakness in the right hand, underwent a multiple tendon transfer to correct the loss of digit and wrist extension...
December 2016: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/27777557/snap-your-fingers-an-erp-sloreta-study-investigating-implicit-processing-of-self-vs-other-related-movement-sounds-using-the-passive-oddball-paradigm
#11
Christoph Justen, Cornelia Herbert
So far, neurophysiological studies have investigated implicit and explicit self-related processing particularly for self-related stimuli such as the own face or name. The present study extends previous research to the implicit processing of self-related movement sounds and explores their spatio-temporal dynamics. Event-related potentials (ERPs) were assessed while participants (N = 12 healthy subjects) listened passively to previously recorded self- and other-related finger snapping sounds, presented either as deviants or standards during an oddball paradigm...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27776572/mismatch-negativity-and-p3a-amplitude-in-young-adolescents-with-first-episode-psychosis-a-comparison-with-adhd
#12
J Rydkjær, J R Møllegaard Jepsen, A K Pagsberg, B Fagerlund, B Y Glenthøj, B Oranje
BACKGROUND: Deficient mismatch negativity (MMN) has been proposed as a candidate biomarker in schizophrenia and may therefore be potentially useful in early identification and intervention in early onset psychosis. In this study we explored whether deficits in the automatic orienting and reorienting responses, measured as MMN and P3a amplitude, are present in young adolescents with first-episode psychosis (FEP) and whether findings are specific to psychosis compared to young adolescents with attention deficit hyperactivity disorder (ADHD)...
October 25, 2016: Psychological Medicine
https://www.readbyqxmd.com/read/27757086/using-event-related-brain-potentials-to-assess-perceptibility-the-case-of-french-speakers-and-english-h
#13
Jennifer Mah, Heather Goad, Karsten Steinhauer
French speaking learners of English encounter persistent difficulty acquiring English [h], thus confusing words like eat and heat in both production and perception. We assess the hypothesis that the acoustic properties of [h] may render detection of this segment in the speech stream insufficiently reliable for second language acquisition. We use the mismatch negativity (MMN) in event-related potentials to investigate [h] perception in French speaking learners of English and native English controls, comparing both linguistic and non-linguistic conditions in an unattended oddball paradigm...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27752799/distinguishing-neural-adaptation-and-predictive-coding-hypotheses-in-auditory-change-detection
#14
Renée M Symonds, Wei Wei Lee, Adam Kohn, Odelia Schwartz, Sarah Witkowski, Elyse S Sussman
The auditory mismatch negativity (MMN) component of event-related potentials (ERPs) has served as a neural index of auditory change detection. MMN is elicited by presentation of infrequent (deviant) sounds randomly interspersed among frequent (standard) sounds. Deviants elicit a larger negative deflection in the ERP waveform compared to the standard. There is considerable debate as to whether the neural mechanism of this change detection response is due to release from neural adaptation (neural adaptation hypothesis) or from a prediction error signal (predictive coding hypothesis)...
October 17, 2016: Brain Topography
https://www.readbyqxmd.com/read/27746831/comparison-of-pre-attentive-auditory-discrimination-at-gross-and-fine-difference-between-auditory-stimuli
#15
Himanshu Kumar Sanju, Prawin Kumar
Introduction Mismatch Negativity is a negative component of the event-related potential (ERP) elicited by any discriminable changes in auditory stimulation. Objective The present study aimed to assess pre-attentive auditory discrimination skill with fine and gross difference between auditory stimuli. Method Seventeen normal hearing individual participated in the study. To assess pre-attentive auditory discrimination skill with fine difference between auditory stimuli, we recorded mismatch negativity (MMN) with pair of stimuli (pure tones), using /1000 Hz/ and /1010 Hz/ with /1000 Hz/ as frequent stimulus and /1010 Hz/ as infrequent stimulus...
October 2016: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/27738760/als-and-mmn-mimics-in-patients-with-bscl2-mutations-the-expanding-clinical-spectrum-of-spg17-hereditary-spastic-paraplegia
#16
Thomas Musacchio, Ann-Kathrin Zaum, Nurcan Üçeyler, Claudia Sommer, Nora Pfeifroth, Karlheinz Reiners, Erdmute Kunstmann, Jens Volkmann, Simone Rost, Stephan Klebe
Silver syndrome/SPG17 is a motor manifestation of mutations in the BSCL2 gene and usually presents as a complicated form of hereditary spastic paraplegia (HSP). We present clinical data, follow-up, and genetic results of seven patients with Silver syndrome/SPG17 including a family with a variable intrafamilial phenotype ranging from subclinical signs to a severe and rapidly progressing amyotrophic lateral sclerosis (ALS)-like phenotype. For molecular diagnosis of the family, we used the TruSight Exome sequencing panel consisting of 2761 genes...
October 13, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27732869/neurophysiological-evidence-for-the-interplay-of-speech-segmentation-and-word-referent-mapping-during-novel-word-learning
#17
Clément François, Toni Cunillera, Enara Garcia, Matti Laine, Antoni Rodriguez-Fornells
Learning a new language requires the identification of word units from continuous speech (the speech segmentation problem) and mapping them onto conceptual representation (the word to world mapping problem). Recent behavioral studies have revealed that the statistical properties found within and across modalities can serve as cues for both processes. However, segmentation and mapping have been largely studied separately, and thus it remains unclear whether both processes can be accomplished at the same time and if they share common neurophysiological features...
October 9, 2016: Neuropsychologia
https://www.readbyqxmd.com/read/27729137/electrophysiological-and-phonological-change-detection-measures-of-auditory-word-processing-in-normal-persian-speaking-children
#18
Seyyede Zohreh Ziatabar Ahmadi, Saeid Mahmoudian, Hasan Ashayeri, Farshid Allaeddini, Mohammad Farhadi
OBJECTIVE: Auditory phoneme discrimination is a basic and important prerequisite for acquiring speech, reading, and spelling skills. Children, who are unable to perceive auditory phoneme discrimination, cannot develop phonemic representations. Therefore, the early identification of these deficits and application of effective therapeutic approaches is a necessity. We need to assess appropriately word or sound discrimination in normal populations using an objective passive task such as mismatch negativity (MMN)...
November 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27720996/relationships-between-quantity-of-language-input-and-brain-responses-in-bilingual-and-monolingual-infants
#19
Adrian Garcia-Sierra, Nairan Ramírez-Esparza, Patricia K Kuhl
The present investigation explored the relation between the amount of language input and neural responses in English monolingual (N=18) and Spanish-English bilingual (N=19) infants. We examined the mismatch negativity (MMN); both the positive mismatch response (pMMR) and the negative mismatch response (nMMR), and identify a relationship between amount of language input and brain measures of speech discrimination for native and non-native speech sounds (i.e., Spanish, English and Chinese). Brain responses differed as a function of language input for native speech sounds in both monolinguals and bilinguals...
October 6, 2016: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/27713712/vowels-and-consonants-in-the-brain-evidence-from-magnetoencephalographic-studies-on-the-n1m-in-normal-hearing-listeners
#20
Anna Dora Manca, Mirko Grimaldi
Speech sound perception is one of the most fascinating tasks performed by the human brain. It involves a mapping from continuous acoustic waveforms onto the discrete phonological units computed to store words in the mental lexicon. In this article, we review the magnetoencephalographic studies that have explored the timing and morphology of the N1m component to investigate how vowels and consonants are computed and represented within the auditory cortex. The neurons that are involved in the N1m act to construct a sensory memory of the stimulus due to spatially and temporally distributed activation patterns within the auditory cortex...
2016: Frontiers in Psychology
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