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Auditory steady state response

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https://www.readbyqxmd.com/read/29789937/visual-and-auditory-steady-state-responses-in-attention-deficit-hyperactivity-disorder
#1
Ali Khaleghi, Hadi Zarafshan, Mohammad Reza Mohammadi
We designed a study to investigate the patterns of the steady-state visual evoked potential (SSVEP) and auditory steady-state response (ASSR) in adolescents with attention-deficit/hyperactivity disorder (ADHD) when performing a motor response inhibition task. Thirty 12- to 18-year-old adolescents with ADHD and 30 healthy control adolescents underwent an electroencephalogram (EEG) examination during steady-state stimuli when performing a stop-signal task. Then, we calculated the amplitude and phase of the steady-state responses in both visual and auditory modalities...
May 22, 2018: European Archives of Psychiatry and Clinical Neuroscience
https://www.readbyqxmd.com/read/29746895/low-and-high-gamma-auditory-steady-states-in-response-to-440-hz-carrier-chirp-modulated-tones-show-no-signs-of-attentional-modulation
#2
Evaldas Pipinis, Aleksandras Voicikas, Inga Griskova-Bulanova
Auditory steady-state responses (ASSRs) are increasingly used as a neurodiagnostical tool and in neurotechnological applications where it is important to test responses at different frequencies. We aimed to evaluate EEG responses to a low-frequency carrier (440 Hz) tone modulated with 500 ms chirps at 1-120 Hz and to test the ability of stimulation to highlight the low and high gamma band activity. Increasing and decreasing modulation rates were applied. Subjective pleasantness of chirps and attentional effects on ASSRs to chirps were assessed...
May 7, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29745515/-progress-of-generation-mechanisms-of-auditory-steady-state-response
#3
REVIEW
Xiaodan Tan, Qiuyang Fu, Tao Wang
The scalp-recorded auditory steady-state response (ASSR) is a periodically evoked potential in response to the stimulation with the acoustical property in the same period. The ASSR can be readily induced in comparison with transient responses for specific conditions. The clinical utility of ASSR may be unjustified for the ambiguity of the genesis. With the advance of relevant research, it is considered that the main generation hypotheses of the ASSR are conceived to be pertinent with the linear superposition or neural entrainment mechanism...
June 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29719356/defects-of-gamma-oscillations-in-auditory-steady-state-evoked-potential-of-schizophrenia
#4
Chenhui Sun, Ping Zhou, Changming Wang, Yu Fan, Qing Tian, Fang Dong, Fuchun Zhou, Chuanyue Wang
Background: Patients with schizophrenia have many cognitive deficits. Gamma oscillations exist in the human brain and are closely related to neurocognition. Auditory Steady-State Responses (ASSRs) is an electroneurophysiological index that could reflect gamma oscillations. It was found that the energy evoked by 40 Hz ASSRs in schizophrenic patients was significantly lower than that in healthy subjects. However, the correlation between ASSRs phase index and clinical symptoms and neurocognitive deficits has yet to be systematically studied...
February 25, 2018: Shanghai Archives of Psychiatry
https://www.readbyqxmd.com/read/29705712/abnormal-auditory-evoked-gamma-band-oscillations-in-first-episode-schizophrenia-during-both-eye-open-and-eye-close-states
#5
Junjie Wang, Yingying Tang, Adrian Curtin, Raymond C K Chan, Ya Wang, Hui Li, Tianhong Zhang, Zhenying Qian, Qian Guo, Yu Li, Xu Liu, Xiaochen Tang, Jijun Wang
Abnormal auditory steady state response (ASSR) is a typical finding among schizophrenia patients, which is thought to directly reflect deficient gamma band oscillations in the brain. However, whether these ASSR alterations are state dependent, e.g. during eye-open or eye-closed conditions, has not yet been carefully elucidated in schizophrenia. Our study aimed to explore whether the abnormality of ASSR in patients with first-episode schizophrenia (FEP) is altered under eye-open (EO) and eye-closed (EC) states...
April 26, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29672320/correlation-between-preoperative-auditory-steady-state-response-and-postoperative-electrically-evoked-auditory-brainstem-response-and-t-level-in-cochlear-implantation-for-child-patients-with-inner-ear-malformations
#6
Xiao-Feng Qiao, Xin Li, Dong Wang, Tong-Li Li
OBJECTIVE: This study aims to investigate the correlation between thresholds of preoperative multiple auditory steady-state response (ASSR) and electrically evoked auditory brainstem response (EABR) and the behavioral threshold. METHODS: A total of 72 patients were elected to receive a multichannel cochlear implant. According to the residual hearing determined in a preoperative test using high-, moderate-, and low-frequency ASSR, these patients were divided into the following 2 groups: residual hearing and hearing loss...
April 19, 2018: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/29655974/tacs-mediated-modulation-of-the-auditory-steady-state-response-as-seen-with-meg
#7
Petteri Hyvärinen, Dawoon Choi, Gianpaolo Demarchi, Antti A Aarnisalo, Nathan Weisz
BACKGROUND: Previous studies have shown that transcranial electrical stimulation can be successfully applied during simultaneous MEG measurements. In particular, using beamforming they have established that changes of stimulus induced as well as evoked activity can be inspected during transcranial alternating current stimulation (tACS). OBJECTIVE/HYPOTHESIS: We studied tACS-mediated changes of the auditory steady-state response (ASSR), hypothesizing that-due to the putatively inhibitory role of alpha oscillations-these evoked responses would be diminished...
March 28, 2018: Hearing Research
https://www.readbyqxmd.com/read/29650320/assessment-of-auditory-threshold-using-multiple-magnitude-squared-coherence-and-amplitude-modulated-tones-monaural-stimulation-around-40-hz
#8
Glaucia de Morais Silva, Felipe Antunes, Catherine Salvador Henrique, Leonardo Bonato Felix
BACKGROUND AND OBJECTIVE: The use of objective detection techniques applied to the auditory steady-state responses (ASSRs) for the assessment of auditory thresholds has been investigated over the years. The idea consists in setting up the audiometric profile without subjective inference from patients and evaluators. The challenge encountered is to reduce the detection time of auditory thresholds reaching high correlation coefficients between the objective and the conventional thresholds, as well as reducing difference between thresholds...
June 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29624540/evaluation-of-speed-and-accuracy-of-next-generation-auditory-steady-state-response-and-auditory-brainstem-response-audiometry-in-children-with-normal-hearing-and-hearing-loss
#9
Yvonne S Sininger, Lisa L Hunter, Deborah Hayes, Patricia A Roush, Kristin M Uhler
OBJECTIVES: The first objective of this study was to compare the predicted audiometric thresholds obtained by auditory steady state response (ASSR) and auditory brainstem response (ABR) in infants and toddlers when both techniques use optimal stimuli and detection algorithms. This information will aid in determining the basis for large discrepancies in ABR and ASSR measures found in past studies. The hypothesis was that advancements in ASSR response detection would improve (lower) thresholds and decrease discrepancies between the thresholds produced by the two techniques...
April 5, 2018: Ear and Hearing
https://www.readbyqxmd.com/read/29604686/relationship-between-speech-evoked-neural-responses-and-perception-of-speech-in-noise-in-older-adults
#10
Guangting Mai, Jyrki Tuomainen, Peter Howell
Speech-in-noise (SPIN) perception involves neural encoding of temporal acoustic cues. Cues include temporal fine structure (TFS) and envelopes that modulate at syllable (Slow-rate ENV) and fundamental frequency (F0 -rate ENV) rates. Here the relationship between speech-evoked neural responses to these cues and SPIN perception was investigated in older adults. Theta-band phase-locking values (PLVs) that reflect cortical sensitivity to Slow-rate ENV and peripheral/brainstem frequency-following responses phase-locked to F0 -rate ENV (FFRENV_ F 0 ) and TFS (FFRTFS ) were measured from scalp-electroencephalography responses to a repeated speech syllable in steady-state speech-shaped noise (SpN) and 16-speaker babble noise (BbN)...
March 2018: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29570815/identifying-auditory-cortex-encoding-abnormalities-in-schizophrenia-the-utility-of-low-frequency-versus-40-hz-steady-state-measures
#11
J C Edgar, Charles L Fisk, Yu-Han Chen, Breannan Stone-Howell, Song Liu, Michael A Hunter, Mingxiong Huang, Juan Bustillo, José M Cañive, Gregory A Miller
Magnetoencephalography (MEG) and EEG have identified poststimulus low frequency and 40 Hz steady-state auditory encoding abnormalities in schizophrenia (SZ). Negative findings have also appeared. To identify factors contributing to these inconsistencies, healthy control (HC) and SZ group differences were examined in MEG and EEG source space and EEG sensor space, with better group differentiation hypothesized for source than sensor measures given greater predictive utility for source measures. Fifty-five HC and 41 chronic SZ were presented 500 Hz sinusoidal stimuli modulated at 40 Hz during simultaneous whole-head MEG and EEG...
March 23, 2018: Psychophysiology
https://www.readbyqxmd.com/read/29566882/auditory-steady-state-response-in-cochlear-implant-patients
#12
Alejandro Torres-Fortuny, Isabel Arnaiz-Marquez, Heivet Hernández-Pérez, Eduardo Eimil-Suárez
INTRODUCTION AND OBJECTIVE: Auditory steady state responses to continuous amplitude modulated tones at rates between 70 and 110Hz, have been proposed as a feasible alternative to objective frequency specific audiometry in cochlear implant subjects. The aim of the present study is to obtain physiological thresholds by means of auditory steady-state response in cochlear implant patients (Clarion HiRes 90K), with acoustic stimulation, on free field conditions and to verify its biological origin...
March 19, 2018: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/29559420/global-field-synchronization-of-40-hz-auditory-steady-state-response-does-it-change-with-attentional-demands
#13
Inga Griskova-Bulanova, Evaldas Pipinis, Aleksandras Voicikas, Thomas Koenig
Auditory steady-state responses (ASSRs) are increasingly used in research of neuropsychiatric disorders and for brain-computer interface applications. However, results on attentional modulation of ASSRs are inconclusive. The evaluation of large-scale effects of task-related modulation on ASSRs might give better estimation of the induced changes. The aim of the study was to test global field synchronization - a reference-independent evaluation of the amount of phase-locking among all active regions at a given frequency - during tasks differing in attentional demands to 40 Hz auditory stimulation...
May 1, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29504434/threshold-monitoring-of-intraoperative-auditory-steady-state-responses-for-ossiculoplasty-surgery
#14
Qingsong Liu, Guodong Feng, Yingying Shang, Cheng Chi, Yufei Qiao, Zhiqiang Gao
OBJECTIVE: The objective of this study is to establish a reliable intraoperative auditory threshold monitoring system for ossiculoplasty surgery. DESIGN: The chirp signal of self-designed sound field earphone (SFE) was calibrated physically and psychophysically. The interaural attenuation of the SFE was tested in patients with unilateral complete deafness and contralateral normal hearing (10 patients). Self-designed SFEs were used to measure the chirp-evoked auditory steady-state responses (Chirp-ASSR) threshold of patients (14 cases and 15 ears) with conductive hearing loss after anesthesia but before surgery...
March 5, 2018: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/29489895/gamma-band-auditory-steady-state-response-after-frontal-tdcs-a-double-blind-randomized-crossover-study
#15
Yoshiaki Miyagishi, Takashi Ikeda, Tetsuya Takahashi, Kiwamu Kudo, Hirofumi Morise, Yoshio Minabe, Mitsuru Kikuchi
The effects of transcranial direct current stimulation (tDCS) likely depend on cortical N-methyl-D-aspartic acid (NMDA) neurotransmission; however, no previous studies have reported tDCS-mediated modulation of cortical NMDA neurotransmission in humans. The gamma-band auditory steady-state response (ASSR) to a 40 Hz stimulation likely reflects the integrity of cortical NMDA neurotransmission. The present study tested whether the effect of tDCS is reflected in gamma-band ASSRs during a 40 Hz stimulation. Using a double-blind, randomized, crossover study, we performed magnetoencephalography (MEG) and measured the ASSR in 24 healthy participants during 40 Hz of auditory stimulation after prefrontal tDCS (2 mA) or sham (i...
2018: PloS One
https://www.readbyqxmd.com/read/29488040/did-you-listen-to-the-beat-auditory-steady-state-responses-in-the-human-electroencephalogram-at-4-and-7-hz-modulation-rates-reflect-selective-attention
#16
Manuela Jaeger, Martin G Bleichner, Anna-Katharina R Bauer, Bojana Mirkovic, Stefan Debener
The acoustic envelope of human speech correlates with the syllabic rate (4-8 Hz) and carries important information for intelligibility, which is typically compromised in multi-talker, noisy environments. In order to better understand the dynamics of selective auditory attention to low frequency modulated sound sources, we conducted a two-stream auditory steady-state response (ASSR) selective attention electroencephalogram (EEG) study. The two streams consisted of 4 and 7 Hz amplitude and frequency modulated sounds presented from the left and right side...
February 27, 2018: Brain Topography
https://www.readbyqxmd.com/read/29487299/differential-modulation-of-the-auditory-steady-state-response-and-inhibitory-gating-by-chloral-hydrate-anesthesia
#17
Yuchen Wang, Lanlan Ma, Xuejiao Wang, Ling Qin
Auditory steady state response (ASSR) and inhibitory gating (IG) are electrophysiological examinations commonly used to evaluate the sensory and cognitive functions of the brain. In some clinic examinations and animal experiments, general anesthesia is necessary to conduct electrophysiological recordings. However, the effects of anesthesia on ASSR and IG remain unclear. For this reason, we recorded local field potentials though electrodes implanted in different brain areas of rats: the auditory cortex (AC), hippocampus (HC), amygdala (AMY), and prefrontal cortex (PFC), and compared the characteristics of ASSR and IG under anesthetized and conscious conditions...
February 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29447794/plasticity-after-pediatric-cochlear-implantation-implication-from-changes-in-peripheral-plasma-level-of-bdnf-and-auditory-nerve-responses
#18
Razieh Alemi, Masoud Motassadi Zarandy, Mohammad Taghi Joghataei, Ali Eftekharian, Mohammad Reza Zarrindast, Nasim Vousooghi
INTRODUCTION: Sensory neural hearing loss could lead to some structural and physiological changes in the auditory pathways, such as alteration in the expression of neurotrophins. These factors, especially Brain-Derived Neurotrophic Factor (BDNF), play an important role in synaptic functions and experience-related plasticity. Restoring cochlear function after hearing loss is possible through cochlear implantation (CI). Evaluation of the blood concentration changes of neurotrophins as prerequisites of plasticity could help scientists to determine the prognosis of CI as in the candidacy procedure or enhancing prosthesis function by adding the exact needed amount of BDNF to the electrode array...
February 2018: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/29415081/auditory-steady-state-responses-in-primary-and-non-primary-regions-of-the-auditory-cortex-in-neonatal-ventral-hippocampal-lesion-rats
#19
Sibin Li, Lanlan Ma, Yuchen Wang, Xuejiao Wang, Yingzhuo Li, Ling Qin
Auditory steady-state responses (ASSRs) represent the electrophysiological activity of the auditory nervous system in response to a periodic acoustic stimulus. Spectrogram analysis can reveal the frequency and phase information entrained in ASSRs. Clinically, the ASSR is used to detect abnormalities in electroencephalographs obtained from schizophrenia patients, who show reduced power and phase locking of ASSRs. The neonatal ventral hippocampal lesion (NVHL) rat is a widely used model to investigate the neurodevelopmental mechanisms of schizophrenia...
2018: PloS One
https://www.readbyqxmd.com/read/29397081/phase-amplitude-coupling-of-the-electroencephalogram-in-the-auditory-cortex-in-schizophrenia
#20
Shogo Hirano, Alexander Nakhnikian, Yoji Hirano, Naoya Oribe, Shigenobu Kanba, Toshiaki Onitsuka, Margaret Levin, Kevin M Spencer
BACKGROUND: Cross-frequency interactions may coordinate neural circuits operating at different frequencies. While neural oscillations associated with particular circuits in schizophrenia (SZ) are impaired, few studies have examined cross-frequency interactions. Here we examined phase-amplitude coupling (PAC) in the electroencephalograms of individuals with SZ and healthy control subjects (HCs). We computed PAC during the baseline period of 40-Hz auditory steady-state stimulation and rest...
January 2018: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
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