Neurons throughout the mammalian central auditory pathway respond selectively to stimulus frequency and amplitude, and some are also selective for stimulus duration. First found in the auditory midbrain or inferior colliculus (IC), these duration-tuned neurons (DTNs) provide a potential neural mechanism for encoding temporal features of sound. In this study, we investigated how having an additi...

Previous studies have demonstrated that temporal envelope (E) is sufficient for speech perception, while fine structure (FS) is important for pitch perception for normal-hearing (NH) listeners. Listeners with sensorineural hearing loss (SNHL) have an impaired ability to use FS in lexical tone perception due to the reduced frequency resolution. Listeners with auditory neuropathy spectrum disorde...

Behavioral detection thresholds, auditory filter widths, and temporal modulation transfer functions were obtained from four starlings before, during and after 11 days of subcutaneous injections of kanamycin, an aminoglycoside antibiotic. Birds were operantly conditioned to respond to pure tones and amplitude modulated noises ranging in frequency from 0.25 to 7 kHz using adaptive staircase proce...

BACKGROUND According to previous studies, most of the speech recognition disorders in older adults are theresults of deficits in audibility and auditory temporal resolution. In this paper, the effect of ageing on timecompressedspeech and auditory temporal resolution by word recognition in continuous and interrupted noisewas studied. METHODS A time-compressed speech test (TCST) was conducted o...

Natural sounds, including vocal communication sounds, contain critical information at multiple time scales. Two essential temporal modulation rates in speech have been argued to be in the low gamma band (∼20-80 ms duration information) and the theta band (∼150-300 ms), corresponding to segmental and diphonic versus syllabic modulation rates, respectively. It has been hypothesized that auditory ...

Auditory filter theory posits a tradeoff in time-frequency analysis: high temporal precision is achievable only at the expense of poorer frequency resolution and vice versa. Here, we examined the hierarchy of brain mechanisms of these spectrotemporal tradeoffs through a series of physiological and behavioral measures aimed to tap temporal and spectral acuity at different levels of the auditory ...

Written by PisaVisionLab Monday, 30 December 2013 12:28 Last Updated Friday, 03 July 2015 14:13 New Research in Journal Of Neuroscience Congratulations to Claudia and Concetta , whose latest paper has just been accepted for publication in JN. Auditory and tactile signals combine to influence vision during binocular rivalry Claudia Lunghi , Maria Concetta Morrone and David Alais Resolution of pe...

The human auditory system outperforms existing automatic speech recognition system by a large extent. This motivates the modeling of the human auditory system and the application of auditory model for robust automatic speech recognition. During the last years, we have aquired a good knowledge about the mechanisms of the auditory system. However, we are less sure about which properties of the au...

Numerous fish species produce broad-band pulsed sounds with a distinct temporal patterning which is thought to be important during intraspecific communication. In order to determine whether fishes are able to utilize temporal characteristics of acoustic signals, time resolution was determined in four species of otophysines and anabantoids by analyzing auditory brainstem responses (ABRs) to doub...

Studies of auditory temporal processing in marine mammals have traditionally focused on the highly refined temporal resolution capabilities of dolphins and other odontocete cetaceans. However, a recent electrophysiological investigation of manatee (Trichechus manatus) hearing has shown their temporal resolution to be better than expected, leading to speculation that enhanced temporal processing...