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Auditory temporal processing

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https://www.readbyqxmd.com/read/28346292/bilateral-labyrinthine-and-internal-auditory-canal-enhancement-in-an-infant-with-severe-labyrinthine-dysplasia-a-previously-unreported-phenomenon
#1
Charles L Anzalone, Mai Lan Ho, Neil S Patel, Lisa A Schimmenti, Melissa D DeJong, Matthew L Carlson
OBJECTIVE: To describe a novel case of congenital profound bilateral sensorineural hearing loss in a patient with bilateral nodular internal auditory canal and labyrinthine enhancement and temporal bone dysplasia. PATIENTS: A 76-day-old female was referred to the authors' center for evaluation of congenital deafness. Behavioral observations and objective audiometric evaluation demonstrated bilateral profound sensorineural hearing loss and a comprehensive multidisciplinary evaluation identified compound heterozygous pathogenic variants in MYO7A, a gene associated with Usher Syndrome Type 1B or DFNB2...
March 24, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28343741/time-as-context-the-influence-of-hierarchical-patterning-on-sensory-inference
#2
Juanita Todd, Anne Petherbridge, Bronte Speirs, Alexander Provost, Bryan Paton
Time, or more specifically temporal structure, is a critical variable in understanding how the auditory system uses acoustic patterns to predict input, and to filter events based on their relevance. A key index of this filtering process is the auditory evoked potential component known as mismatch negativity or MMN. In this paper we review findings of smaller MMN in schizophrenia through the lens of time as an influential contextual variable. More specifically, we review studies that show how MMN to a locally rare pattern-deviation is modulated by the longer-term context in which it occurs...
March 23, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28337410/damage-to-white-matter-bottlenecks-contributes-to-language-impairments-after-left-hemispheric-stroke
#3
Joseph C Griffis, Rodolphe Nenert, Jane B Allendorfer, Jerzy P Szaflarski
Damage to the white matter underlying the left posterior temporal lobe leads to deficits in multiple language functions. The posterior temporal white matter may correspond to a bottleneck where both dorsal and ventral language pathways are vulnerable to simultaneous damage. Damage to a second putative white matter bottleneck in the left deep prefrontal white matter involving projections associated with ventral language pathways and thalamo-cortical projections has recently been proposed as a source of semantic deficits after stroke...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28336337/mismatch-negativity-as-a-potential-neurobiological-marker-of-early-stage-alzheimer-disease-and-vascular-dementia
#4
Shixiang Jiang, Chang Yan, Zhengxue Qiao, Haiqian Yao, Shiquan Jiang, Xiaohui Qiu, Xiuxian Yang, Deyu Fang, Yanjie Yang, Limei Zhang, Lina Wang, Liming Zhang
Alzheimer's disease (AD) and vascular dementia (VD) are serious, irreversible forms of cognitive impairment, which means that an early diagnosis is essential to slow down their progression. One potential neurophysiological biomarker of these diseases is the mismatch negativity (MMN) event-related potentials (ERP) component, which reflects an automatic detection mechanism at the pre-attentive stages of information processing. We evaluated the auditory MMN response in individuals from two patient groups: those in the prodromal stages of AD (P-AD) and those in the prodromal stages of VD (P-VD)...
March 20, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28334383/a-critical-role-of-inhibition-in-temporal-processing-maturation-in-the-primary-auditory-cortex
#5
Dongqin Cai, Rongrong Han, Miaomiao Liu, Fenghua Xie, Ling You, Yi Zheng, Limin Zhao, Jun Yao, Yiwei Wang, Yin Yue, Christoph E Schreiner, Kexin Yuan
Faithful representation of sound envelopes in primary auditory cortex (A1) is vital for temporal processing and perception of natural sounds. However, the emergence of cortical temporal processing mechanisms during development remains poorly understood. Although cortical inhibition has been proposed to play an important role in this process, direct in-vivo evidence has been lacking. Using loose-patch recordings in rat A1 immediately after hearing onset, we found that stimulus-following ability in fast-spiking neurons was significantly better than in regular-spiking (RS) neurons...
March 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28330464/spectral-temporal-eeg-dynamics-of-speech-discrimination-processing-in-infants-during-sleep
#6
Phillip M Gilley, Kristin Uhler, Kaylee Watson, Christine Yoshinaga-Itano
BACKGROUND: Oddball paradigms are frequently used to study auditory discrimination by comparing event-related potential (ERP) responses from a standard, high probability sound and to a deviant, low probability sound. Previous research has established that such paradigms, such as the mismatch response or mismatch negativity, are useful for examining auditory processes in young children and infants across various sleep and attention states. The extent to which oddball ERP responses may reflect subtle discrimination effects, such as speech discrimination, is largely unknown, especially in infants that have not yet acquired speech and language...
March 22, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28316586/spatial-and-temporal-high-processing-of-visual-and-auditory-stimuli-in-cervical-dystonia
#7
Gaetana Chillemi, Alessandro Calamuneri, Francesca Morgante, Carmen Terranova, Vincenzo Rizzo, Paolo Girlanda, Maria Felice Ghilardi, Angelo Quartarone
OBJECTIVE: Investigation of spatial and temporal cognitive processing in idiopathic cervical dystonia (CD) by means of specific tasks based on perception in time and space domains of visual and auditory stimuli. BACKGROUND: Previous psychophysiological studies have investigated temporal and spatial characteristics of neural processing of sensory stimuli (mainly somatosensorial and visual), whereas the definition of such processing at higher cognitive level has not been sufficiently addressed...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28300007/the-consistency-of-the-subjective-concept-of-randomness
#8
Ru Qi Yu, Jordan Gunn, Daniel Osherson, Jiaying Zhao
A pervasive bias in the subjective concept of randomness is that people often expect random sequences to exhibit more alternations than produced by genuine random processes. What is less known is the stability of this bias. Here we examine two important aspects of the over-alternation bias: first, whether this bias is present in stimuli that vary across feature dimensions, sensory modalities, presentation modes, and probing methods; and second, how consistent the bias is across these stimulus variations. In Experiment 1, participants adjusted sequences until they looked maximally random...
March 16, 2017: Quarterly Journal of Experimental Psychology: QJEP
https://www.readbyqxmd.com/read/28293182/visual-field-map-clusters-in-high-order-visual-processing-organization-of-v3a-v3b-and-a-new-cloverleaf-cluster-in-the-posterior-superior-temporal-sulcus
#9
Brian Barton, Alyssa A Brewer
The cortical hierarchy of the human visual system has been shown to be organized around retinal spatial coordinates throughout much of low- and mid-level visual processing. These regions contain visual field maps (VFMs) that each follows the organization of the retina, with neighboring aspects of the visual field processed in neighboring cortical locations. On a larger, macrostructural scale, groups of such sensory cortical field maps (CFMs) in both the visual and auditory systems are organized into roughly circular cloverleaf clusters...
2017: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/28291832/electrophysiological-and-hemodynamic-mismatch-responses-in-rats-listening-to-human-speech-syllables
#10
Mahdi Mahmoudzadeh, Ghislaine Dehaene-Lambertz, Fabrice Wallois
Speech is a complex auditory stimulus which is processed according to several time-scales. Whereas consonant discrimination is required to resolve rapid acoustic events, voice perception relies on slower cues. Humans, right from preterm ages, are particularly efficient to encode temporal cues. To compare the capacities of preterms to those observed in other mammals, we tested anesthetized adult rats by using exactly the same paradigm as that used in preterm neonates. We simultaneously recorded neural (using ECoG) and hemodynamic responses (using fNIRS) to series of human speech syllables and investigated the brain response to a change of consonant (ba vs...
2017: PloS One
https://www.readbyqxmd.com/read/28290075/audio-visual-speech-perception-in-adult-readers-with-dyslexia-an-fmri-study
#11
Jascha Rüsseler, Zheng Ye, Ivonne Gerth, Gregor R Szycik, Thomas F Münte
Developmental dyslexia is a specific deficit in reading and spelling that often persists into adulthood. In the present study, we used slow event-related fMRI and independent component analysis to identify brain networks involved in perception of audio-visual speech in a group of adult readers with dyslexia (RD) and a group of fluent readers (FR). Participants saw a video of a female speaker saying a disyllabic word. In the congruent condition, audio and video input were identical whereas in the incongruent condition, the two inputs differed...
March 13, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28278240/neural-correlates-of-conflict-between-gestures-and-words-a-domain-specific-role-for-a-temporal-parietal-complex
#12
J Adam Noah, Swethasri Dravida, Xian Zhang, Shaul Yahil, Joy Hirsch
The interpretation of social cues is a fundamental function of human social behavior, and resolution of inconsistencies between spoken and gestural cues plays an important role in successful interactions. To gain insight into these underlying neural processes, we compared neural responses in a traditional color/word conflict task and to a gesture/word conflict task to test hypotheses of domain-general and domain-specific conflict resolution. In the gesture task, recorded spoken words ("yes" and "no") were presented simultaneously with video recordings of actors performing one of the following affirmative or negative gestures: thumbs up, thumbs down, head nodding (up and down), or head shaking (side-to-side), thereby generating congruent and incongruent communication stimuli between gesture and words...
2017: PloS One
https://www.readbyqxmd.com/read/28275060/echo-acoustic-flow-shapes-object-representation-in-spatially-complex-acoustic-scenes
#13
Wolfgang Greiter, Uwe Firzlaff
Echolocating bats use echoes of their sonar emissions to determine the position and distance of objects or prey. Target distance is represented as a map of echo delay in the auditory cortex (AC) of bats. During a bat's flight through a natural complex environment, echo streams are reflected from multiple objects along its flight path. Separating such complex streams of echoes or other sounds is a challenge for the auditory system of bats as well as other animals. We investigated the representation of multiple echo streams in the AC of anaesthetized bats (Phyllostomus discolor) and tested the hypothesis, if neurons can lock on echoes from specific objects in a complex echo-acoustic pattern while the representation of surrounding objects is suppressed...
March 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28275059/differences-in-post-injury-auditory-system-pathophysiology-after-mild-blast-and-non-blast-acute-acoustic-trauma
#14
Nicholas Race, Jesyin Lai, Riyi Shi, Edward L Bartlett
Hearing difficulties are the most commonly reported disabilities among veterans. Blast exposures during explosive events likely play a role, given their propensity to directly damage both peripheral (PAS) and central (CAS) auditory system components. Post-blast PAS pathophysiology has been well-documented in both clinical case reports and laboratory investigations. In contrast, blast-induced CAS dysfunction remains under-studied, but has been hypothesized to contribute to an array of common veteran behavioral complaints including learning, memory, communication, and emotional regulation...
March 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28270763/neuromodulatory-effects-of-auditory-training-and-hearing-aid-use-on-audiovisual-speech-perception-in-elderly-individuals
#15
Luodi Yu, Aparna Rao, Yang Zhang, Philip C Burton, Dania Rishiq, Harvey Abrams
Although audiovisual (AV) training has been shown to improve overall speech perception in hearing-impaired listeners, there has been a lack of direct brain imaging data to help elucidate the neural networks and neural plasticity associated with hearing aid (HA) use and auditory training targeting speechreading. For this purpose, the current clinical case study reports functional magnetic resonance imaging (fMRI) data from two hearing-impaired patients who were first-time HA users. During the study period, both patients used HAs for 8 weeks; only one received a training program named ReadMyQuips(TM) (RMQ) targeting speechreading during the second half of the study period for 4 weeks...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28268687/impact-of-mild-traumatic-brain-injury-on-auditory-brain-stem-dysfunction-in-mouse-model
#16
Reza M Amanipour, Robert D Frisina, Samantha A Cresoe, Teresa J Parsons, Xiaoxia Zhu, Cesario V Borlongan, Joseph P Walton
The auditory brainstem response (ABR) is an electrophysiological test that examines the functionality of the auditory nerve and brainstem. Traumatic brain injury (TBI) can be detected if prolonged peak latency is observed in ABR measurements, since latency measures the neural conduction time in the brainstem, and an increase in latency can be a sign of pathological lesion at the auditory brainstem level. The ABR is elicited by brief sounds that can be used to measure hearing sensitivity as well as temporal processing...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267801/t-complex-measures-in-bilingual-spanish-english-and-turkish-german-children-and-monolingual-peers
#17
Tanja Rinker, Valerie L Shafer, Markus Kiefer, Nancy Vidal, Yan H Yu
BACKGROUND: Lateral temporal neural measures (Na and T-complex Ta and Tb) of the auditory evoked potential (AEP) index maturation of auditory/speech processing. These measures are also sensitive to language experience in adults. This paper examined neural responses to a vowel sound at temporal electrodes in four- to five-year-old Spanish-English bilinguals and English monolinguals and in five- to six-year-old Turkish-German bilinguals and German monolinguals. The goal was to determine whether obligatory AEPs at temporal electrode sites were modulated by language experience...
2017: PloS One
https://www.readbyqxmd.com/read/28263928/the-spatiotemporal-substrates-of-autobiographical-recollection-using-event-related-ica-to-study-cognitive-networks-in-action
#18
Chris Tailby, Genevieve Rayner, Sarah Wilson, Graeme Jackson
Higher cognitive functions depend upon dynamically unfolding brain network interactions. Autobiographical recollection - the autonoetic re-experiencing of context rich, emotionally laden, personally experienced episodes - is an excellent example of such a process. Autobiographical recollection unfolds over time, with different cognitive processes engaged at different times throughout. In this paper we apply a recently developed analysis technique - event related independent components analysis (eICA) - to study the spatiotemporal dynamics of neural activity supporting autobiographical recollection...
March 2, 2017: NeuroImage
https://www.readbyqxmd.com/read/28263629/auditory-spectral-versus-spatial-temporal-order-judgment-threshold-distribution-analysis
#19
Leah Fostick, Harvey Babkoff
Some researchers suggested that one central mechanism is responsible for temporal order judgments (TOJ), within and across sensory channels. This suggestion is supported by findings of similar TOJ thresholds in same modality and cross-modality TOJ tasks. In the present study, we challenge this idea by analyzing and comparing the threshold distributions of the spectral and spatial TOJ tasks. In spectral TOJ, the tones differ in their frequency ("high" and "low") and are delivered either binaurally or monaurally...
March 6, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28254454/developmental-phonagnosia-linking-neural-mechanisms-with-the-behavioural-phenotype
#20
Claudia Roswandowitz, Stefanie Schelinski, Katharina von Kriegstein
Human voice recognition is critical for many aspects of social communication. Recently, a rare disorder, developmental phonagnosia, which describes the inability to recognise a speaker's voice, has been discovered. The underlying neural mechanisms are unknown. Here, we used two functional magnetic resonance imaging experiments to investigate brain function in two behaviourally well characterised phonagnosia cases, both 32 years old: AS has apperceptive and SP associative phonagnosia. We found distinct malfunctioned brain mechanisms in AS and SP matching their behavioural profiles...
February 22, 2017: NeuroImage
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