Forward-masking patterns produced by symmetric and asymmetric pulse shapes in electric hearing
نویسندگان
چکیده
منابع مشابه
Psychophysical recovery from single-pulse forward masking in electric hearing.
Psychophysical single-pulse forward-masking (SPFM) recovery functions were measured for three electrodes in each of eight subjects with the nucleus mini-22 cochlear implant. Masker and probe stimuli were single 200-micros/phase biphasic current pulses. Recovery functions were measured at several masker levels spanning the electric dynamic range of electrodes chosen from the apical, middle, and ...
متن کاملPsychophysical recovery from pulse-train forward masking in electric hearing.
Psychophysical pulse-train forward-masking (PTFM) recovery functions were measured in fifteen subjects with the Nucleus mini-22 cochlear implant and six subjects with the Clarion cochlear implant. Masker and probe stimuli were 500-Hz trains of 200- or 77-micros/phase biphasic current pulses. Electrode configurations were bipolar for Nucleus subjects and monopolar for Clarion subjects. Masker du...
متن کاملHigh-level psychophysical tuning curves: forward masking in normal-hearing and hearing-impaired listeners.
Forward-masked psychophysical tuning curves (PTCs) were obtained for 1000-Hz probe tones at multiple probe levels from one ear of 26 normal-hearing listeners and from 24 ears of 21 hearing-impaired listeners with cochlear hearing loss. Comparisons between normal-hearing and hearing-impaired PTCs were made at equivalent masker levels near the tips of PTCs. Comparisons were also made of PTC chara...
متن کاملAuditory time constants for off-frequency forward masking in normal-hearing and hearing-impaired listeners.
Previous research has shown that frequency-specific estimates of auditory time constants for recovery from short-term adaptation can be made using a fixed-probe forward-masking procedure (Nelson & Freyman, 1987) if the masker and the probe stimuli are at the same frequency. This study examines the validity of time-constant estimates for off-frequency forward-masking conditions in which the mask...
متن کاملThe effect of basilar-membrane nonlinearity on the shapes of masking period patterns in normal and impaired hearing.
Masking period patterns (MPPs) were measured in listeners with normal and impaired hearing using amplitude-modulated tonal maskers and short tonal probes. The frequency of the masker was either the same as the frequency of the probe (on-frequency masking) or was one octave below the frequency of the probe (off-frequency masking). In experiment 1, MPPs were measured for listeners with normal hea...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2010
ISSN: 0001-4966
DOI: 10.1121/1.3257231