Journal ArticleDOI
Changes in sensory evoked responses coincide with rapid improvement in speech identification performance
Reads0
Chats0
TLDR
Rapid physiological changes in the human auditory system that coincide with learning during a 1-hour test session in which participants learned to identify two consonant vowel syllables that differed in voice onset time are reported.Abstract:
Perceptual learning is sometimes characterized by rapid improvements in performance within the first hour of training (fast perceptual learning), which may be accompanied by changes in sensory and/or response pathways. Here, we report rapid physiological changes in the human auditory system that coincide with learning during a 1-hour test session in which participants learned to identify two consonant vowel syllables that differed in voice onset time. Within each block of trials, listeners were also presented with a broadband noise control stimulus to determine whether changes in auditory evoked potentials were specific to the trained speech cue. The ability to identify the speech sounds improved from the first to the fourth block of trials and remained relatively constant thereafter. This behavioral improvement coincided with a decrease in N1 and P2 amplitude, and these learning-related changes differed from those observed for the noise stimulus. These training-induced changes in sensory evoked responses were followed by an increased negative peak (between 275 and 330 msec) over fronto-central sites and by an increase in sustained activity over the parietal regions. Although the former was also observed for the noise stimulus, the latter was specific to the speech sounds. The results are consistent with a top-down nonspecific attention effect on neural activity during learning as well as a more learning-specific modulation, which is coincident with behavioral improvements in speech identification.read more
Citations
More filters
Journal ArticleDOI
Hearing in Time: evoked Potential Studies of Temporal Processing
TL;DR: The temporal aspects of human hearing as measured using the auditory evoked potentials are reviewed, which measure the millisecond-by-millisecond activity of populations of neurons as they form an auditory percept.
Journal ArticleDOI
Repeated Stimulus Exposure Alters the Way Sound Is Encoded in the Human Brain
TL;DR: The role of stimulus exposure and listening tasks, in the absence of training, on the modulation of evoked brain activity is examined to mean stimulus exposure, with and without being paired with an identification task, alters the way sound is processed in the brain.
Journal ArticleDOI
Electrophysiological Assessment of Auditory Stimulus-Specific Plasticity in Schizophrenia
Ryan P. Mears,Kevin M. Spencer +1 more
TL;DR: The results suggest that stimulus-specific auditory neuroplasticity is abnormal in schizophrenia, and the electrophysiologic assessment of stimulus- specific plasticity may yield novel targets for drug treatment in schizophrenia.
Journal ArticleDOI
Auditory Training for Central Auditory Processing Disorder.
TL;DR: Although efficacy data in this area are still emerging, current findings support the use of AT for treatment of auditory difficulties.
Journal ArticleDOI
Effects of category learning on neural sensitivity to non-native phonetic categories
Emily B. Myers,Kristen A. Swan +1 more
TL;DR: Behavioral results suggest that for successful learners, categorization training led to increased discrimination accuracy for between-category contrasts with no concomitant increase for within- category contrasts, and support a view in which top–down information about category membership may reshape perceptual sensitivities via attention or executive mechanisms in the frontal lobes.
References
More filters
Journal ArticleDOI
Electrical Signs of Selective Attention in the Human Brain
TL;DR: Auditory evoked potentials were recorded from the vertex of subjects who listened selectively to a series of tone pipping in one ear and ignored concurrent tone pips in the other ear to study the response set established to recognize infrequent, higher pitched tone pipped in the attended series.
Journal ArticleDOI
The P300 wave of the human event-related potential
TL;DR: The P300 wave is a positive deflection in the human event-related potential that may represent the transfer of information to consciousness, a process that involves many different regions of the brain.
Journal ArticleDOI
Increased auditory cortical representation in musicians
Christo Pantev,Robert Oostenveld,Almut Engelien,Bernhard Ross,Larry E. Roberts,Manfried Hoke +5 more
TL;DR: The results, when interpreted with evidence for modified somatosensory representations of the fingering digits in skilled violinists, suggest that use-dependent functional reorganization extends across the sensory cortices to reflect the pattern of sensory input processed by the subject during development of musical skill.
Journal ArticleDOI
Rapid task-related plasticity of spectrotemporal receptive fields in primary auditory cortex.
TL;DR: Investigation of the hypothesis that task performance can rapidly and adaptively reshape cortical receptive field properties in accord with specific task demands and salient sensory cues found that attending to a specific target frequency during the detection task consistently induced localized facilitative changes in STRF shape.
Journal ArticleDOI
Endogeneous brain potentials associated with selective auditory attention
J. C. Hansen,Steven A. Hillyard +1 more
TL;DR: It was concluded that the effect of selective auditory attention on the N1 component is not due solely to an enlargement of the exogenous N1 components of the vertex potential, but rather includes the addition of a prolonged endogenous component.
Related Papers (5)
The Time Course of Neural Changes Underlying Auditory Perceptual Learning
The N1 wave of the human electric and magnetic response to sound: a review and an analysis of the component structure
Risto Näätänen,Terence W. Picton +1 more