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Auditory temporal processing

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https://www.readbyqxmd.com/read/28730834/resveratrol-alleviates-ethanol-induced-hormonal-and-metabolic-disturbances-in-the-rat
#1
J Popelář, M Díaz Gómez, J Lindovský, N Rybalko, J Burianová, T Oohashi, J Syka
Brain-specific link protein Bral2 represents a substantial component of perineuronal nets (PNNs) enwrapping neurons in the central nervous system. To elucidate the role of Bral2 in auditory signal processing, the hearing function in knockout Bral2(-/-) (KO) mice was investigated using behavioral and electrophysiological methods and compared with wild type Bral2(+/+) (WT) mice. The amplitudes of the acoustic startle reflex (ASR) and the efficiency of the prepulse inhibition of ASR (PPI of ASR), produced by prepulse noise stimulus or gap in continuous noise, was similar in 2-week-old WT and KO mice...
July 18, 2017: Physiological Research
https://www.readbyqxmd.com/read/28727776/language-related-differences-of-the-sustained-response-evoked-by-natural-speech-sounds
#2
Christina Siu-Dschu Fan, Xingyu Zhu, Hans Günter Dosch, Christiane von Stutterheim, André Rupp
In tonal languages, such as Mandarin Chinese, the pitch contour of vowels discriminates lexical meaning, which is not the case in non-tonal languages such as German. Recent data provide evidence that pitch processing is influenced by language experience. However, there are still many open questions concerning the representation of such phonological and language-related differences at the level of the auditory cortex (AC). Using magnetoencephalography (MEG), we recorded transient and sustained auditory evoked fields (AEF) in native Chinese and German speakers to investigate language related phonological and semantic aspects in the processing of acoustic stimuli...
2017: PloS One
https://www.readbyqxmd.com/read/28727651/visual-processing-recruits-the-auditory-cortices-in-prelingually-deaf-children-and-influences-cochlear-implant-outcomes
#3
Maojin Liang, Yuebo Chen, Fei Zhao, Junpeng Zhang, Jiahao Liu, Xueyuan Zhang, Yuexin Cai, Suijun Chen, Xianghui Li, Ling Chen, Yiqing Zheng
OBJECTIVE: Although visual processing recruitment of the auditory cortices has been reported previously in prelingually deaf children who have a rapidly developing brain and no auditory processing, the visual processing recruitment of auditory cortices might be different in processing different visual stimuli and may affect cochlear implant (CI) outcomes. METHODS: Ten prelingually deaf children, 4 to 6 years old, were recruited for the study. Twenty prelingually deaf subjects, 4 to 6 years old with CIs for 1 year, were also recruited; 10 with well-performing CIs, 10 with poorly performing CIs...
July 19, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28723907/auditory-and-visual-distractors-disrupt-multisensory-temporal-acuity-in-the-crossmodal-temporal-order-judgment-task
#4
Cassandra L Dean, Brady A Eggleston, Kyla David Gibney, Enimielen Aligbe, Marissa Blackwell, Leslie Dowell Kwakye
The ability to synthesize information across multiple senses is known as multisensory integration and is essential to our understanding of the world around us. Sensory stimuli that occur close in time are likely to be integrated, and the accuracy of this integration is dependent on our ability to precisely discriminate the relative timing of unisensory stimuli (crossmodal temporal acuity). Previous research has shown that multisensory integration is modulated by both bottom-up stimulus features, such as the temporal structure of unisensory stimuli, and top-down processes such as attention...
2017: PloS One
https://www.readbyqxmd.com/read/28716965/neural-tuning-to-low-level-features-of-speech-throughout-the-perisylvian-cortex
#5
Julia Berezutskaya, Zachary V Freudenburg, Umut Güçlü, Marcel A J van Gerven, Nick F Ramsey
Despite a large body of research, we continue to lack a detailed account of how auditory processing of continuous speech unfolds in the human brain. Previous research showed the propagation of low-level acoustic features of speech from posterior superior temporal gyrus towards anterior superior temporal gyrus in the human brain (Hullett et al., 2016). In this study we investigate what happens to these neural representations past the superior temporal gyrus, and how they engage higher-level language processing areas, such as inferior frontal gyrus...
July 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28716582/a-probabilistic-poisson-based-model-accounts-for-an-extensive-set-of-absolute-auditory-threshold-measurements
#6
Peter Heil, Artur Matysiak, Heinrich Neubauer
Thresholds for detecting sounds in quiet decrease with increasing sound duration in every species studied. The neural mechanisms underlying this trade-off, often referred to as temporal integration, are not fully understood. Here, we probe the human auditory system with a large set of tone stimuli differing in duration, shape of the temporal amplitude envelope, duration of silent gaps between bursts, and frequency. Duration was varied by varying the plateau duration of plateau-burst (PB) stimuli, the duration of the onsets and offsets of onset-offset (OO) stimuli, and the number of identical bursts of multiple-burst (MB) stimuli...
June 27, 2017: Hearing Research
https://www.readbyqxmd.com/read/28713253/on-the-keyhole-hypothesis-high-mutual-information-between-ear-and-scalp-eeg
#7
Kaare B Mikkelsen, Preben Kidmose, Lars K Hansen
We propose and test the keyhole hypothesis-that measurements from low dimensional EEG, such as ear-EEG reflect a broadly distributed set of neural processes. We formulate the keyhole hypothesis in information theoretical terms. The experimental investigation is based on legacy data consisting of 10 subjects exposed to a battery of stimuli, including alpha-attenuation, auditory onset, and mismatch-negativity responses and a new medium-long EEG experiment involving data acquisition during 13 h. Linear models were estimated to lower bound the scalp-to-ear capacity, i...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28713201/language-dependent-changes-in-pitch-relevant-neural-activity-in-the-auditory-cortex-reflect-differential-weighting-of-temporal-attributes-of-pitch-contours
#8
Ananthanarayan Krishnan, Jackson T Gandour, Yi Xu, Chandan H Suresh
There remains a gap in our knowledge base about neural representation of pitch attributes that occur between onset and offset of dynamic, curvilinear pitch contours. The aim is to evaluate how language experience shapes processing of pitch contours as reflected in the amplitude of cortical pitch-specific response components. Responses were elicited from three nonspeech, bidirectional (falling-rising) pitch contours representative of Mandarin Tone 2 varying in location of the turning point with fixed onset and offset...
February 2017: Journal of Neurolinguistics
https://www.readbyqxmd.com/read/28712672/noise-induced-cochlear-synaptopathy-in-rhesus-monkeys-macaca-mulatta
#9
M D Valero, J A Burton, S N Hauser, T A Hackett, R Ramachandran, M C Liberman
Cochlear synaptopathy can result from various insults, including acoustic trauma, aging, ototoxicity, or chronic conductive hearing loss. For example, moderate noise exposure in mice can destroy up to ∼50% of synapses between auditory nerve fibers (ANFs) and inner hair cells (IHCs) without affecting outer hair cells (OHCs) or thresholds, because the synaptopathy occurs first in high-threshold ANFs. However, the fiber loss likely impairs temporal processing and hearing-in-noise, a classic complaint of those with sensorineural hearing loss...
July 8, 2017: Hearing Research
https://www.readbyqxmd.com/read/28706481/adverse-effects-of-the-apolipoprotein-e-%C3%AE%C2%B54-allele-on-episodic-memory-task-switching-and-gray-matter-volume-in-healthy-young-adults
#10
Jianfei Nao, Hongzan Sun, Qiushi Wang, Shuang Ma, Shuo Zhang, Xiaoyu Dong, Ying Ma, Xiaoming Wang, Dongming Zheng
Many studies have shown that healthy elderly subjects and patients with Alzheimer's disease (AD) who carry the apolipoprotein E (ApoE) ε4 allele have worse cognitive function and more severe brain atrophy than non-carriers. However, it remains unclear whether this ApoE polymorphism leads to changes of cognition and brain morphology in healthy young adults. In this study, we used an established model to measure verbal episodic memory and core executive function (EF) components (response inhibition, working memory and task switching) in 32 ApoE ε4 carriers and 40 non-carriers between 20 years and 40 years of age...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28706081/brief-stimulus-exposure-fully-remediates-temporal-processing-deficits-induced-by-early-hearing-loss
#11
David B Green, Michelle M Mattingly, Yi Ye, Jennifer D Gay, Merri J Rosen
In childhood, partial hearing loss can produce prolonged deficits in speech perception and temporal processing. Early therapeutic interventions targeting temporal processing may improve later speech-related outcomes, however. Gap detection is a measure of auditory temporal resolution that relies on auditory cortex (ACx), and early auditory deprivation alters intrinsic and synaptic properties in ACx. Thus, early deprivation should induce deficits in gap detection, which should be reflected in ACx gap sensitivity...
July 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28701550/the-influence-of-envelope-waveform-on-itd-sensitivity-of-neurons-in-the-auditory-midbrain
#12
David Greenberg, Jessica Josephine Margaret Monaghan, Mathias Dietz, Torsten Marquardt, David McAlpine
Interaural time differences (ITDs) conveyed by the modulated envelopes of high-frequency sounds can serve as a cue for localising a sound source. Klein-Hennig et al. (2011) demonstrated the envelope attack, the rate at which stimulus energy in the envelope increases, and the duration of the pause, the interval between successive envelope pulses, as important factors affecting sensitivity to envelope ITDs in human listeners. Modulated sounds with rapid attacks and long pauses produce the lowest ITD-discrimination thresholds...
July 12, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28700143/consequences-of-brain-tumour-resection-on-emotion-recognition
#13
Giulia Mattavelli, Alberto Pisoni, Alessandra Casarotti, Alessandro Comi, Giada Sera, Marco Riva, Alberto Bizzi, Marco Rossi, Lorenzo Bello, Costanza Papagno
Emotion processing impairments are common in patients undergoing brain surgery for fronto-temporal tumour resection, with potential consequences on social interactions. However, evidence is controversial concerning side and site of lesions causing such deficits. This study investigates visual and auditory emotion recognition in brain tumour patients with the aim of clarifying which lesion sites are related to impairments in emotion processing from different modalities. Thirty-four patients were evaluated, before and after surgery, on facial expression and emotional prosody recognition; voxel-based lesion-symptom mapping (VLSM) analyses were performed on patients' post-surgery MRI images...
July 12, 2017: Journal of Neuropsychology
https://www.readbyqxmd.com/read/28700108/gpr88-in-a2a-receptor-expressing-neurons-modulates-locomotor-response-to-dopamine-agonists-but-not-sensorimotor-gating
#14
A C Meirsman, A de Kerchove d'Exaerde, B L Kieffer, A M Ouagazzal
The orphan receptor, GPR88, is emerging as a key player in the pathophysiology of several neuropsychiatric diseases, including psychotic disorders. Knockout (KO) mice lacking GPR88 throughout the brain exhibit many abnormalities relevant to schizophrenia including locomotor hyperactivity, behavioral hypersensitivity to dopaminergic psychostimulants and deficient sensorimotor gating. Here, we used conditional knockout (cKO) mice lacking GPR88 selectively in striatal medium spiny neurons expressing A2A receptor to determine neuronal circuits underlying these phenotypes...
July 12, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28698606/reading-induced-shifts-of-perceptual-speech-representations-in-auditory-cortex
#15
Milene Bonte, Joao M Correia, Mirjam Keetels, Jean Vroomen, Elia Formisano
Learning to read requires the formation of efficient neural associations between written and spoken language. Whether these associations influence the auditory cortical representation of speech remains unknown. Here we address this question by combining multivariate functional MRI analysis and a newly-developed 'text-based recalibration' paradigm. In this paradigm, the pairing of visual text and ambiguous speech sounds shifts (i.e. recalibrates) the perceptual interpretation of the ambiguous sounds in subsequent auditory-only trials...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28694174/multidimensional-receptive-field-processing-by-cat-primary-auditory-cortical-neurons
#16
Craig A Atencio, Tatyana O Sharpee
The receptive fields of many auditory cortical neurons are multidimensional and are best represented by more than one stimulus feature. The number of these dimensions, their characteristics, and how they differ with stimulus context have been relatively unexplored. Standard methods that are often used to characterize multidimensional stimulus selectivity, such as spike-triggered covariance (STC) or maximally informative dimensions (MIDs), are either limited to Gaussian stimuli or are only able to recover a small number of stimulus features due to data limitations...
July 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/28686908/a-longitudinal-study-investigating-neural-processing-of-speech-envelope-modulation-rates-in-children-with-a-family-risk-for-dyslexia
#17
Astrid De Vos, Sophie Vanvooren, Jolijn Vanderauwera, Pol Ghesquière, Jan Wouters
Recent evidence suggests that a fundamental deficit in the synchronization of neural oscillations to temporal information in speech may underlie phonological processing problems in dyslexia. Since previous studies were performed cross-sectionally in school-aged children or adults, developmental aspects of neural auditory processing in relation to reading acquisition and dyslexia remain to be investigated. The present longitudinal study followed 68 children during development from pre-reader (5 years old) to beginning reader (7 years old) and more advanced reader (9 years old)...
May 25, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28685822/thalamic-connections-of-the-core-auditory-cortex-and-rostral-supratemporal-plane-in-the-macaque-monkey
#18
Brian H Scott, Kadharbatcha S Saleem, Yukiko Kikuchi, Makoto Fukushima, Mortimer Mishkin, Richard C Saunders
In the primate auditory cortex, information flows serially in the mediolateral dimension from core, to belt, to parabelt. In the caudorostral dimension, stepwise serial projections convey information through the primary, rostral, and rostrotemporal (AI, R, and RT) core areas on the supratemporal plane (STP), continuing to the rostrotemporal polar area (RTp) and adjacent auditory-related areas of the rostral superior temporal gyrus (STGr) and temporal pole. In addition to this cascade of corticocortical connections, the auditory cortex receives parallel thalamocortical projections from the medial geniculate nucleus (MGN)...
July 7, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28683024/brain-imaging-of-pain-sensitization-in-patients-with-knee-osteoarthritis
#19
Jesus Pujol, Gerard Martínez-Vilavella, Jone Llorente-Onaindia, Ben J Harrison, Marina López-Solà, Marina López-Ruiz, Laura Blanco-Hinojo, Pere Benito, Joan Deus, Jordi Monfort
A relevant aspect in osteoarthritic pain is neural sensitization. This phenomenon involves augmented responsiveness to painful stimulation and may entail a clinically worse prognosis. We used functional MRI (fMRI) to study pain sensitization in patients with knee osteoarthritis. Sixty patients were recruited and pain sensitization was clinically defined on the basis of regional spreading of pain (spreading sensitization) and increased pain response to repeated stimulation (temporal summation). fMRI testing involved assessing brain responses to both pressure and heat stimulation...
July 3, 2017: Pain
https://www.readbyqxmd.com/read/28679003/stability-of-the-cortical-sensory-waveforms-the-p1-n1-p2-complex-and-t-complex-of-auditory-evoked-potentials
#20
Monica Wagner, Valerie L Shafer, Evis Haxhari, Kevin Kiprovski, Katherine Behrmann, Tara Griffiths
Purpose: Atypical cortical sensory waveforms reflecting impaired encoding of auditory stimuli may result from inconsistency in cortical response to the acoustic feature changes within spoken words. Thus, the present study assessed intrasubject stability of the P1-N1-P2 complex and T-complex to multiple productions of spoken nonwords in 48 adults to provide benchmarks for future studies probing auditory processing deficits. Method: Response trials were split (split epoch averages) for each of 4 word types for each subject and compared for similarity in waveform morphology...
July 5, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
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