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Auditory temporal processing

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https://www.readbyqxmd.com/read/29135686/cortical-correlates-of-binaural-temporal-processing-deficits-in-older-adults
#1
Ann Clock Eddins, David A Eddins
OBJECTIVES: This study was designed to evaluate binaural temporal processing in young and older adults using a binaural masking level difference (BMLD) paradigm. Using behavioral and electrophysiological measures within the same listeners, a series of stimulus manipulations was used to evaluate the relative contribution of binaural temporal fine-structure and temporal envelope cues. We evaluated the hypotheses that age-related declines in the BMLD task would be more strongly associated with temporal fine-structure than envelope cues and that age-related declines in behavioral measures would be correlated with cortical auditory evoked potential (CAEP) measures...
November 9, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/29131743/integration-and-temporal-processing-of-asynchronous-audiovisual-speech
#2
David M Simon, Mark T Wallace
Multisensory integration of visual mouth movements with auditory speech is known to offer substantial perceptual benefits, particularly under challenging (i.e., noisy) acoustic conditions. Previous work characterizing this process has found that ERPs to auditory speech are of shorter latency and smaller magnitude in the presence of visual speech. We sought to determine the dependency of these effects on the temporal relationship between the auditory and visual speech streams using EEG. We found that reductions in ERP latency and suppression of ERP amplitude are maximal when the visual signal precedes the auditory signal by a small interval and that increasing amounts of asynchrony reduce these effects in a continuous manner...
November 13, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29127879/role-of-the-right-inferior-parietal-cortex-in-auditory-selective-attention-an-rtms-study
#3
Corinne A Bareham, Stanimira D Georgieva, Marc R Kamke, David Lloyd, Tristan A Bekinschtein, Jason B Mattingley
Selective attention is the process of directing limited capacity resources to behaviourally relevant stimuli while ignoring competing stimuli that are currently irrelevant. Studies in healthy human participants and in individuals with focal brain lesions have suggested that the right parietal cortex is crucial for resolving competition for attention. Following right-hemisphere damage, for example, patients may have difficulty reporting a brief, left-sided stimulus if it occurs with a competitor on the right, even though the same left stimulus is reported normally when it occurs alone...
October 16, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29125987/contextual-modulation-of-sound-processing-in-the-auditory-cortex
#4
REVIEW
C Angeloni, M N Geffen
In everyday acoustic environments, we navigate through a maze of sounds that possess a complex spectrotemporal structure, spanning many frequencies and exhibiting temporal modulations that differ within frequency bands. Our auditory system needs to efficiently encode the same sounds in a variety of different contexts, while preserving the ability to separate complex sounds within an acoustic scene. Recent work in auditory neuroscience has made substantial progress in studying how sounds are represented in the auditory system under different contexts, demonstrating that auditory processing of seemingly simple acoustic features, such as frequency and time, is highly dependent on co-occurring acoustic and behavioral stimuli...
November 7, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29124823/differences-between-child-and-adult-large-scale-functional-brain-networks-for-reading-tasks
#5
Xin Liu, Yue Gao, Qiqi Di, Jiali Hu, Chunming Lu, Yun Nan, James R Booth, Li Liu
Reading is an important high-level cognitive function of the human brain, requiring interaction among multiple brain regions. Revealing differences between children's large-scale functional brain networks for reading tasks and those of adults helps us to understand how the functional network changes over reading development. Here we used functional magnetic resonance imaging data of 17 adults (19-28 years old) and 16 children (11-13 years old), and graph theoretical analyses to investigate age-related changes in large-scale functional networks during rhyming and meaning judgment tasks on pairs of visually presented Chinese characters...
November 9, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29122654/a-processing-schema-for-children-in-the-auditory-equiprobable-go-nogo-task-erp-components-and-behaviour
#6
Robert J Barry, Frances M De Blasio, Jack S Fogarty
A sequential processing model for adults in the auditory equiprobable Go/NoGo task has been developed in recent years. This used temporal principal components analysis (PCA) to decompose Go/NoGo event related potential (ERP) data into components that mark stages of perceptual and cognitive processing. The model has been found useful in frameworking several studies in young and older adults, and in children. Recently, it has been demonstrated that the common PCA approach of decomposing Go and NoGo ERP data together results in misallocation of variance between the conditions, distorting the timing, topography, and amplitudes of the resultant components in each condition...
November 6, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29121216/fast-inhibitory-decay-facilitates-adult-like-temporal-processing-in-layer-5-of-developing-primary-auditory-cortex
#7
Fenghua Xie, Ling You, Dongqin Cai, Miaomiao Liu, Yin Yue, Yiwei Wang, Kexin Yuan
The protracted maturational process of temporal processing in layer 4 (L4) of primary auditory cortex (A1) has been extensively studied. Accumulating evidences show that layer 5 (L5) receives direct thalamic inputs as well. How the temporal responses in L5 may developmentally emerge remains unclear. Using in vivo loose-patch recordings in rat A1, we found that putative pyramidal (Pyr) neurons in developing L5 exhibited adult-like stimulus-following ability but less bursting shortly after hearing onset. L5 Pyr neurons in adult A1 exhibited phase-locking similar to L4 neurons, while L5 fast-spiking (FS) neurons showed greater phase-locking at 7 and 12...
October 31, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29118141/midbrain-adaptation-may-set-the-stage-for-the-perception-of-musical-beat
#8
Vani G Rajendran, Nicol S Harper, Jose A Garcia-Lazaro, Nicholas A Lesica, Jan W H Schnupp
The ability to spontaneously feel a beat in music is a phenomenon widely believed to be unique to humans. Though beat perception involves the coordinated engagement of sensory, motor and cognitive processes in humans, the contribution of low-level auditory processing to the activation of these networks in a beat-specific manner is poorly understood. Here, we present evidence from a rodent model that midbrain preprocessing of sounds may already be shaping where the beat is ultimately felt. For the tested set of musical rhythms, on-beat sounds on average evoked higher firing rates than off-beat sounds, and this difference was a defining feature of the set of beat interpretations most commonly perceived by human listeners over others...
November 15, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29114210/human-novelty-response-to-emotional-animal-vocalizations-effects-of-phylogeny-and-familiarity
#9
Marina Scheumann, Anna S Hasting, Elke Zimmermann, Sonja A Kotz
Darwin (1872) postulated that emotional expressions contain universals that are retained across species. We recently showed that human rating responses were strongly affected by a listener's familiarity with vocalization types, whereas evidence for universal cross-taxa emotion recognition was limited. To disentangle the impact of evolutionarily retained mechanisms (phylogeny) and experience-driven cognitive processes (familiarity), we compared the temporal unfolding of event-related potentials (ERPs) in response to agonistic and affiliative vocalizations expressed by humans and three animal species...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29111973/otoferlin-acts-as-a-ca-2-sensor-for-vesicle-fusion-and-vesicle-pool-replenishment-at-auditory-hair-cell-ribbon-synapses
#10
Nicolas Antoine Michalski, Juan D Goutman, Sarah Marie Auclair, Jacques Boutet de Monvel, Margot Tertrais, Alice Emptoz, Alexandre Parrin, Sylvie Nouaille, Marc Guillon, Martin Sachse, Danica Ciric, Amel Bahloul, Jean-Pierre Hardelin, Roger Bryan Sutton, Paul Avan, Shyam S Krishnakumar, James E Rothman, Didier Dulon, Saaid Safieddine, Christine Petit
Hearing relies on rapid, temporally precise, and sustained neurotransmitter release at the ribbon synapses of sensory cells, the inner hair cells (IHCs). This process requires otoferlin, a six C2-domain, Ca(2+)-binding transmembrane protein of synaptic vesicles. To decipher the role of otoferlin in the synaptic vesicle cycle, we produced knock-in mice (Otof(Ala515,Ala517/Ala515,Ala517)) with lower Ca(2+)-binding affinity of the C2C domain. The IHC ribbon synapse structure, synaptic Ca(2+) currents, and otoferlin distribution were unaffected in these mutant mice, but auditory brainstem response wave-I amplitude was reduced...
November 7, 2017: ELife
https://www.readbyqxmd.com/read/29109238/extensive-tonotopic-mapping-across-auditory-cortex-is-recapitulated-by-spectrally-directed-attention-and-systematically-related-to-cortical-myeloarchitecture
#11
Frederic K Dick, Matt I Lehet, Martina F Callaghan, Tim A Keller, Martin I Sereno, Lori L Holt
Auditory selective attention is vital in natural soundscapes. But, it is unclear how attentional focus on the primary dimension of auditory representation - acoustic frequency - might modulate basic auditory functional topography during active listening. In contrast to visual selective attention, which is supported by motor-mediated optimization of input across saccades and pupil dilation, the primate auditory system has fewer means of differentially sampling the world. This makes spectrally-directed endogenous attention a particularly crucial aspect of auditory attention...
November 6, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29108832/temporal-processing-in-audition-insights-from-music
#12
Vani G Rajendran, Sundeep Teki, Jan W H Schnupp
Music is a curious example of a temporally patterned acoustic stimulus, and a compelling pan-cultural phenomenon. This review strives to bring some insights from decades of music psychology and sensorimotor synchronization (SMS) literature into the mainstream auditory domain, arguing that musical rhythm perception is shaped in important ways by temporal processing mechanisms in the brain. The feature that unites these disparate disciplines is an appreciation of the central importance of timing, sequencing, and anticipation...
November 3, 2017: Neuroscience
https://www.readbyqxmd.com/read/29107413/modelling-firing-regularity-in-the-ventral-cochlear-nucleus-mechanisms-and-effects-of-stimulus-level-and-synaptopathy
#13
Dan F M Goodman, Ian M Winter, Agnès C Léger, Alain de Cheveigné, Christian Lorenzi
The auditory system processes temporal information at multiple scales, and disruptions to this temporal processing may lead to deficits in auditory tasks such as detecting and discriminating sounds in a noisy environment. Here, a modelling approach is used to study the temporal regularity of firing by chopper cells in the ventral cochlear nucleus, in both the normal and impaired auditory system. Chopper cells, which have a strikingly regular firing response, divide into two classes, sustained and transient, based on the time course of this regularity...
September 20, 2017: Hearing Research
https://www.readbyqxmd.com/read/29106999/functional-connectivity-in-the-dorsal-stream-and-between-bilateral-auditory-related-cortical-areas-differentially-contribute-to-speech-decoding-depending-on-spectro-temporal-signal-integrity-and-performance
#14
Stefan Elmer, Jürg Kühnis, Piyush Rauch, Seyed Abolfazl Valizadeh, Lutz Jäncke
Speech processing relies on the interdependence between auditory perception, sensorimotor integration, and verbal memory functions. Functional and structural connectivity between bilateral auditory-related cortical areas (ARCAs) facilitates spectro-temporal analyses, whereas the dynamic interplay between ARCAs and Broca's area (i.e., dorsal pathway) contributes to verbal memory functions, articulation, and sound-to-motor mapping. However, it remains unclear whether these two neural circuits are preferentially driven by spectral or temporal acoustic information, and whether their recruitment is predictive of speech perception performance and learning...
October 30, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29105620/loud-music-exposure-and-cochlear-synaptopathy-in-young-adults-isolated-auditory-brainstem-response-effects-but-no-perceptual-consequences
#15
John H Grose, Emily Buss, Joseph W Hall
The purpose of this study was to test the hypothesis that listeners with frequent exposure to loud music exhibit deficits in suprathreshold auditory performance consistent with cochlear synaptopathy. Young adults with normal audiograms were recruited who either did ( n = 31) or did not ( n = 30) have a history of frequent attendance at loud music venues where the typical sound levels could be expected to result in temporary threshold shifts. A test battery was administered that comprised three sets of procedures: (a) electrophysiological tests including distortion product otoacoustic emissions, auditory brainstem responses, envelope following responses, and the acoustic change complex evoked by an interaural phase inversion; (b) psychoacoustic tests including temporal modulation detection, spectral modulation detection, and sensitivity to interaural phase; and (c) speech tests including filtered phoneme recognition and speech-in-noise recognition...
January 2017: Trends in Hearing
https://www.readbyqxmd.com/read/29095816/concurrent-temporal-channels-for-auditory-processing-oscillatory-neural-entrainment-reveals-segregation-of-function-at-different-scales
#16
Xiangbin Teng, Xing Tian, Jess Rowland, David Poeppel
Natural sounds convey perceptually relevant information over multiple timescales, and the necessary extraction of multi-timescale information requires the auditory system to work over distinct ranges. The simplest hypothesis suggests that temporal modulations are encoded in an equivalent manner within a reasonable intermediate range. We show that the human auditory system selectively and preferentially tracks acoustic dynamics concurrently at 2 timescales corresponding to the neurophysiological theta band (4-7 Hz) and gamma band ranges (31-45 Hz) but, contrary to expectation, not at the timescale corresponding to alpha (8-12 Hz), which has also been found to be related to auditory perception...
November 2017: PLoS Biology
https://www.readbyqxmd.com/read/29094506/absolute-auditory-threshold-testing-the-absolute
#17
Peter Heil, Artur Matysiak
The mechanisms underlying the detection of sounds in quiet, one of the simplest tasks for auditory systems, are debated. Several models proposed to explain the threshold for sounds in quiet and its dependence on sound parameters include a minimum sound intensity ('hard threshold'), below which sound has no effect on the ear. Also, many models are based on the assumption that threshold is mediated by integration of a neural response proportional to sound intensity. Here, we test these ideas. Using an adaptive forced choice procedure, we obtained thresholds of 95 normal-hearing human ears for 18 tones (3...
November 2, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29093486/cardio-audio-synchronization-drives-neural-surprise-response
#18
Christian Pfeiffer, Marzia De Lucia
Successful prediction of future events depends on the brain's capacity to extract temporal regularities from sensory inputs. Neuroimaging studies mainly investigated regularity processing for exteroceptive sensory inputs (i.e. from outside the body). Here we investigated whether interoceptive signals (i.e. from inside the body) can mediate auditory regularity processing. Human participants passively listened to sound sequences presented in synchrony or asynchrony to their heartbeat while concomitant electroencephalography was recorded...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29090370/expectation-information-processing-and-subjective-duration
#19
Rhimmon Simchy-Gross, Elizabeth Hellmuth Margulis
In research on psychological time, it is important to examine the subjective duration of entire stimulus sequences, such as those produced by music (Teki, Frontiers in Neuroscience, 10, 2016). Yet research on the temporal oddball illusion (according to which oddball stimuli seem longer than standard stimuli of the same duration) has examined only the subjective duration of single events contained within sequences, not the subjective duration of sequences themselves. Does the finding that oddballs seem longer than standards translate to entire sequences, such that entire sequences that contain oddballs seem longer than those that do not? Is this potential translation influenced by the mode of information processing-whether people are engaged in direct or indirect temporal processing? Two experiments aimed to answer both questions using different manipulations of information processing...
October 31, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/29079460/optimized-auditory-transcranial-alternating-current-stimulation-improves-individual-auditory-temporal-resolution
#20
Alina Baltus, Sven Wagner, Carsten Hermann Wolters, Christoph Siegfried Herrmann
BACKGROUND: Temporal resolution of cortical, auditory processing mechanisms is suggested to be linked to peak frequency of neuronal gamma oscillations in auditory cortex areas (individual gamma frequency, IGF): Individuals with higher IGF tend to have better temporal resolution. HYPOTHESIS: Modulating ongoing gamma activity with transcranial alternating current stimulation (tACS) is expected to improve performance in gap detection (GD) tasks (shorter GD thresholds) if the frequency is higher and to decrease GD performance (longer GD thresholds) if the frequency is lower than IGF...
October 17, 2017: Brain Stimulation
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