keyword
MENU ▼
Read by QxMD icon Read
search

ASSR

keyword
https://www.readbyqxmd.com/read/28110090/spatiotemporal-reconstruction-of-auditory-steady-state-responses-to-acoustic-amplitude-modulations-potential-sources-beyond-the-auditory-pathway
#1
Ehsan Darestani Farahani, Tine Goossens, Jan Wouters, Astrid van Wieringen
Investigating the neural generators of auditory steady-state responses (ASSRs), i.e., auditory evoked brain responses, with a wide range of screening and diagnostic applications, has been the focus of various studies for many years. Most of these studies employed a priori assumptions regarding the number and location of neural generators. The aim of this study is to reconstruct ASSR sources with minimal assumptions in order to gain in-depth insight into the number and location of brain regions that are activated in response to low- as well as high-frequency acoustically amplitude modulated signals...
January 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28109832/a-novel-hybrid-auditory-bci-paradigm-combining-assr-and-p300
#2
Netiwit Kaongoen, Sungho Jo
BACKGROUND: Brain-computer interface (BCI) is a technology that provides an alternative way of communication by translating brain activities into digital commands. Due to the incapability of using the vision-dependent BCI for patients who have visual impairment, auditory stimuli have been used to substitute the conventional visual stimuli. NEW METHOD: This paper introduces a hybrid auditory BCI that utilizes and combines auditory steady state response (ASSR) and spatial-auditory P300 BCI to improve the performance for the auditory BCI system...
January 18, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28107359/sustained-cortical-and-subcortical-measures-of-auditory-and-visual-plasticity-following-short-term-perceptual-learning
#3
Bonnie K Lau, Dorea R Ruggles, Sucharit Katyal, Stephen A Engel, Andrew J Oxenham
Short-term training can lead to improvements in behavioral discrimination of auditory and visual stimuli, as well as enhanced EEG responses to those stimuli. In the auditory domain, fluency with tonal languages and musical training has been associated with long-term cortical and subcortical plasticity, but less is known about the effects of shorter-term training. This study combined electroencephalography (EEG) and behavioral measures to investigate short-term learning and neural plasticity in both auditory and visual domains...
2017: PloS One
https://www.readbyqxmd.com/read/28043881/simultaneously-evoked-auditory-potentials-seap-a-new-method-for-concurrent-measurement-of-cortical-and-subcortical-auditory-evoked-activity
#4
Christopher Slugocki, Daniel Bosnyak, Laurel J Trainor
Recent electrophysiological work has evinced a capacity for plasticity in subcortical auditory nuclei in human listeners. Similar plastic effects have been measured in cortically-generated auditory potentials but it is unclear how the two interact. Here we present Simultaneously-Evoked Auditory Potentials (SEAP), a method designed to concurrently elicit electrophysiological brain potentials from inferior colliculus, thalamus, and primary and secondary auditory cortices. Twenty-six normal-hearing adult subjects (mean 19...
December 30, 2016: Hearing Research
https://www.readbyqxmd.com/read/27914370/concurrent-measures-of-contralateral-suppression-of-transient-evoked-otoacoustic-emissions-and-of-auditory-steady-state-responses
#5
Ian B Mertes, Marjorie R Leek
Contralateral suppression of otoacoustic emissions (OAEs) is frequently used to assess the medial olivocochlear (MOC) efferent system, and may have clinical utility. However, OAEs are weak or absent in hearing-impaired ears, so little is known about MOC function in the presence of hearing loss. A potential alternative measure is contralateral suppression of the auditory steady-state response (ASSR) because ASSRs are measurable in many hearing-impaired ears. This study compared contralateral suppression of both transient-evoked otoacoustic emissions (TEOAEs) and ASSRs in a group of ten primarily older adults with either normal hearing or mild sensorineural hearing loss...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27897125/a-comparison-of-thresholds-of-auditory-steady-state-response-and-auditory-brainstem-response-in-healthy-term-babies
#6
Onur Çelik, Görkem Eskiizmir, Uzdan Uz
OBJECTIVE: The goal of this study was to assess the effectiveness of auditory steady-state response (ASSR), determine the cut-off values for each frequency, and detect the best correlated frequencies when compared with the auditory brainstem response (ABR) thresholds in term babies under the age of 12 months. MATERIALS AND METHODS: In total, 88 term babies with a mean age of 2.98 (1-11) months (174 ears) underwent ASSR and ABR tests. The ASSR thresholds for the frequencies of 500, 1000, 2000, and 4000 Hz were compared with the hearing level of the ABR thresholds...
November 28, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27894891/source-analysis-of-auditory-steady-state-responses-in-acoustic-and-electric-hearing
#7
Robert Luke, Astrid De Vos, Jan Wouters
Speech is a complex signal containing a broad variety of acoustic information. For accurate speech reception, the listener must perceive modulations over a range of envelope frequencies. Perception of these modulations is particularly important for cochlear implant (CI) users, as all commercial devices use envelope coding strategies. Prolonged deafness affects the auditory pathway. However, little is known of how cochlear implantation affects the neural processing of modulated stimuli. This study investigates and contrasts the neural processing of envelope rate modulated signals in acoustic and CI listeners...
November 25, 2016: NeuroImage
https://www.readbyqxmd.com/read/27863036/newborn-hearing-screening-in-prematurity-fate-of-screening-failures-and-auditory-maturation
#8
H C Yang, C M Sung, D J Shin, Y B Cho, C H Jang, H-H Cho
OBJECTIVES: The purpose of this study was to identify delayed auditory maturation and the fate of premature infants who failed the newborn hearing screening (NHS) in neonatal intensive care unit. MATERIALS AND METHODS: A total of 1375 neonates underwent NHS using the transient evoked otoacoustic emission (TEOAE) in a tertiary hospital between 2007 and 2010 according to the Joint Committee on Infant Hearing guidelines. In addition, a structured telephone survey was given to caregivers of infants who were lost to follow-up NHS...
November 12, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27739939/intraoperative-auditory-steady-state-monitoring-during-surgery-in-the-cerebellopontine-angle-for-estimation-of-postoperative-hearing-classes
#9
Stefan Rampp, Leonhard Rensch, Sebastian Simmermacher, Torsten Rahne, Christian Strauss, Julian Prell
OBJECTIVE Brainstem auditory evoked potentials (BAEPs) have been used for intraoperative monitoring of the auditory nerve for many years. However, BAEPs yield limited information about the expected postoperative hearing quality and speech perception. The auditory steady-state response (ASSR) enables objective audiograms to be obtained in patients under anesthesia. These ASSRs could be used for intraoperative estimation of hearing classes to improve the postoperative outcome and quality of life. Studies investigating the clinical use of ASSRs during total intravenous anesthesia are currently lacking...
October 14, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27732692/the-40-hz-auditory-steady-state-response-in-patients-with-schizophrenia-a-meta-analysis
#10
Hanna Thuné, Marc Recasens, Peter J Uhlhaas
Importance: The neurobiological mechanisms underlying circuit dysfunctions in schizophrenia remain poorly understood. The 40-Hz auditory steady-state response (ASSR) has been suggested as a potential biomarker for schizophrenia. Objectives: To provide a meta-analytical insight into the presence of 40-Hz ASSR impairments in patients with schizophrenia and to examine the effects of the participant group, stimulus parameters, and analysis and recording techniques. Data Sources: Searches were conducted in PubMed and reference lists of appropriate publications to identify relevant studies published from November 1999 to March 2016...
October 12, 2016: JAMA Psychiatry
https://www.readbyqxmd.com/read/27715342/comparison-of-threshold-estimation-in-infants-with-hearing-loss-or-normal-hearing-using-auditory-steady-state-response-evoked-by-narrow-band-ce-chirps-and-auditory-brainstem-response-evoked-by-tone-pips
#11
Franck Michel, Kristoffer Foldager Jørgensen
OBJECTIVE: The objective of this study is to compare air-conduction thresholds obtained with ASSR evoked by narrow band (NB) CE-chirps and ABR evoked by tone pips (tpABR) in infants with various degrees of hearing loss. DESIGN: Thresholds were measured at 500, 1000, 2000 and 4000 Hz. Data on each participant were collected at the same day. STUDY SAMPLE: Sixty-seven infants aged 4 d to 22 months (median age = 96 days), resulting in 57, 52, 87 and 56 ears for 500, 1000, 2000 and 4000 Hz, respectively...
October 7, 2016: International Journal of Audiology
https://www.readbyqxmd.com/read/27686167/estimating-audiometric-thresholds-using-simultaneous-acquisition-of-assr-and-abr-from-qassr-in-patients-with-sensorineural-hearing-loss
#12
Magdalena Lachowska, Jorge Bohórquez, Özcan Özdamar, Kazimierz Niemczyk
OBJECTIVES: To evaluate the accuracy with which the innovative QASSR method predicts behavioral thresholds in adult patients with sensorineural hearing loss. DESIGN: Subjects were tested at four carrier frequencies (500, 1000, 2000, and 4000 Hz).The resulting QASSR recordings were analyzed for thresholds and magnitude/phase characteristics. Tone-burst ABR was recovered from QASSR signal using CLAD method and analyzed in the time domain. The electrophysiological estimates were compared to hearing thresholds determined behaviorally...
December 2016: International Journal of Audiology
https://www.readbyqxmd.com/read/27649638/increased-bold-signals-elicited-by-high-gamma-auditory-stimulation-of-the-left-auditory-cortex-in-acute-state-schizophrenia
#13
Hironori Kuga, Toshiaki Onitsuka, Yoji Hirano, Itta Nakamura, Naoya Oribe, Hiroaki Mizuhara, Ryota Kanai, Shigenobu Kanba, Takefumi Ueno
Recent MRI studies have shown that schizophrenia is characterized by reductions in brain gray matter, which progress in the acute state of the disease. Cortical circuitry abnormalities in gamma oscillations, such as deficits in the auditory steady state response (ASSR) to gamma frequency (>30-Hz) stimulation, have also been reported in schizophrenia patients. In the current study, we investigated neural responses during click stimulation by BOLD signals. We acquired BOLD responses elicited by click trains of 20, 30, 40 and 80-Hz frequencies from 15 patients with acute episode schizophrenia (AESZ), 14 symptom-severity-matched patients with non-acute episode schizophrenia (NASZ), and 24 healthy controls (HC), assessed via a standard general linear-model-based analysis...
October 2016: EBioMedicine
https://www.readbyqxmd.com/read/27563737/deficits-in-the-30-hz-auditory-steady-state-response-in-patients-with-major-depressive-disorder
#14
Jingjing Chen, Qin Gong, Fei Wu
The auditory steady-state response (ASSR) is an auditory evoked potential that occurs in response to periodically presented auditory stimuli. The ASSR has drawn attention as a biomarker of psychiatric disorders owing to its connection with neural oscillations as well as its easy and noninvasive recording. Abnormalities in the γ band ASSR have been found consistently in patients with schizophrenia and bipolar disorder. However, although major depressive disorder (MDD) is also part of the common psychiatric diseases, the relationship between the ASSR and MDD has not been characterized sufficiently...
October 19, 2016: Neuroreport
https://www.readbyqxmd.com/read/27554665/audiometric-evaluation-in-patients-with-alzheimer-s-disease
#15
Alexandre Villeneuve, Caroline Hommet, Charles Aussedat, Emmanuel Lescanne, Kevin Reffet, David Bakhos
The objective of this study is to assess the validity of ASSR as a complementary diagnostic test for peripheral hearing loss by proving a significant correlation between behavioral thresholds and ASSR. The design used in this study is monocentric prospective study from November 2014 to April 2015. The setting used in this study is the ENT-Head and Neck Surgery Department and Geriatrics Department in a French Regional and University Hospital. The participants are patients over 75 years with cognitive impairment (Alzheimer's disease or mild-cognitive impairment) with a Mini-Mental State Examination score under 27/30 and without hearing aids...
August 23, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27510227/-preoperative-auditory-evaluation-and-postoperative-follow-up-in-cochlear-implantees-the-role-of-objective-measures
#16
W Shehata-Dieler, W Großmann
The primary diagnostic aim prior to cochlear implantation is establishment of a comprehensive and multidisciplinary diagnosis, in order to subsequently begin therapy as early as possible. Audiological evaluation prior to implantation employs a test battery-approach, including subjective and objective procedures. Objective measures show high reliability and therefore play a major role in the diagnosis of difficult-to-test subjects such as infants and young children. During postoperative follow-up, objective measures offer a valid method for analyzing the effects of different stimuli on the auditory system...
August 10, 2016: HNO
https://www.readbyqxmd.com/read/27502823/use-of-auditory-steady-state-responses-in-children-and-comparison-with-other-electrophysiological-and-behavioral-tests
#17
M François, E Dehan, M Carlevan, H Dumont
OBJECTIVE: In patients who cannot or will not cooperate in behavioral hearing assessment, electrophysiological examinations are used, but are time-consuming because the subject has to remain immobile. The aim of this study was to assess whether auditory steady-state responses (ASSR) are sufficiently reliable, compared to auditory brainstem responses (ABR) and free-field audiometry, for assessment to begin with ASSR instead of ABR. MATERIAL AND METHODS: A retrospective study was performed between January 2012 and April 2013, including children less than 6 years of age who could not be tested via headphones...
November 2016: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/27475154/short-term-enhancement-and-suppression-of-dolphin-auditory-evoked-responses-following-echolocation-click-emission
#18
James J Finneran, Roxanne Echon, Jason Mulsow, Dorian S Houser
Biosonar gain control mechanisms in a bottlenose dolphin were investigated by measuring the auditory steady-state response (ASSR) to an external tone while the animal echolocated. The dolphin performed an echo change-detection task that utilized electronically synthesized echoes with echo delays corresponding to 25- and 50-m target range. During the task, amplitude modulated tones with carrier frequencies from 25 to 125 kHz were continuously presented and the instantaneous electroencephalogram stored for later analysis...
July 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27426743/protective-effect-of-polyphenols-on-presbycusis-via-oxidative-nitrosative-stress-suppression-in-rats
#19
Carolina Sánchez-Rodríguez, Eduardo Martín-Sanz, Esperanza Cuadrado, Juan José Granizo, Ricardo Sanz-Fernández
UNLABELLED: Age-related hearing loss (AHL) -presbycusis- is the number one neurodegenerative disorder and top communication deficit of our aged population. Experimental evidence suggests that mitochondrial dysfunction associated with reactive oxygen species (ROS) plays a central role in the aging process of cochlear cells. Dietary antioxidants, in particular polyphenols, have been found to be beneficial in protecting against the generation of ROS in various diseases associated with oxidative stress, such as cancer, neurodegenerative diseases and aging...
October 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27424792/effect-of-attention-on-40hz-auditory-steady-state-response-depends-on-the-stimulation-type-flutter-amplitude-modulated-tones-versus-clicks
#20
Aleksandras Voicikas, Ieva Niciute, Osvaldas Ruksenas, Inga Griskova-Bulanova
Auditory steady-state responses (ASSRs) are used to test the ability of local cortical networks to generate gamma frequency activity in patients with psychiatric disorders. For the effective use of ASSRs in research and clinical applications, it is necessary to find a comfortable stimulation type and to know how ASSRs are modulated by the tasks given to the subjects during the recording session. We aimed to evaluate the suitability of flutter amplitude modulated tone (FAM) stimulation for generation of ASSRs: subjective pleasantness of FAMs and attentional effects on FAM-elicited 40Hz ASSRs were assessed...
August 26, 2016: Neuroscience Letters
keyword
keyword
82335
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"