Factors affecting psychophysical tuning curves for normally hearing subjects

Kluk, Karolina; Moore, Brian C. J.

doi:10.1016/j.heares.2004.04.012

Cited by 50 publications

(71 citation statements)

References 54 publications

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“…This shift is interesting because it was similarly reported by Jennings et al (2009), but was not observed in the model simulations. Previous studies suggest that a PTC with a shifted tip is indicative of off-frequency listening (Moore and Alcantara, 2001;Kluk and Moore, 2004). This may explain why the model simulations did not predict PTCs with shifted tips, as only the CF at the signal frequency was simulated.…”

Section: Discussionmentioning

confidence: 93%

Evaluating the effects of olivocochlear feedback on psychophysical measures of frequency selectivity

Jennings

Strickland

2012

The Journal of the Acoustical Society of America

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Frequency selectivity was evaluated under two conditions designed to assess the influence of a "precursor" stimulus on auditory filter bandwidths. The standard condition consisted of a short masker, immediately followed by a short signal. The precursor condition was identical except a 100-ms sinusoid at the signal frequency (i.e., the precursor) was presented before the masker. The standard and precursor conditions were compared for measurements of psychophysical tuning curves (PTCs), and notched noise tuning characteristics. Estimates of frequency selectivity were significantly broader in the precursor condition. In the second experiment, PTCs in the standard and precursor conditions were simulated to evaluate the influence of the precursor on PTC bandwidth. The model was designed to account for the influence of additivity of masking between the masker and precursor. Model simulations were able to qualitatively account for the perceptual data when outer hair cell gain of the model was reduced in the precursor condition. These findings suggest that the precursor may have reduced cochlear gain, in addition to producing additivity of masking. This reduction in gain may be mediated by the medial olivocochlear reflex.

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Section: Discussionmentioning

confidence: 93%

Evaluating the effects of olivocochlear feedback on psychophysical measures of frequency selectivity

Jennings

Strickland

2012

The Journal of the Acoustical Society of America

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“…As a result, the synthesized masker waveform was a narrowband noise with a center frequency that changed uniformly in time on a log frequency scale over the 0.5f probe -2f probe range. To minimize beat-detection cues, the masker bandwidth was set to 200 Hz for probe frequencies~1,000 Hz and to 320 Hz for probe frequencies~4,000 Hz (Kluk and Moore 2004;Sęk et al 2005). The masker level never exceeded 90 dB SPL.…”

Section: Psychophysical Tuning Curvesmentioning

confidence: 99%

Stimulus-Frequency Otoacoustic Emission Suppression Tuning in Humans: Comparison to Behavioral Tuning

Charaziak

Souza

Siegel

2013

JARO

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As shown by the work of Kemp and Chum in 1980, stimulus-frequency otoacoustic emission suppression tuning curves (SFOAE STCs) have potential to objectively estimate behaviorally measured tuning curves. To date, this potential has not been tested. This study aims to do so by comparing SFOAE STCs and behavioral measures of tuning (simultaneous masking psychophysical tuning curves, PTCs) in 10 normal-hearing listeners for frequency ranges centered around 1,000 and 4,000 Hz at low probe levels. Additionally, SFOAE STCs were collected for varying conditions (probe level and suppression criterion) to identify the optimal parameters for comparison with behavioral data and to evaluate how these conditions affect the features of SFOAE STCs. SFOAE STCs qualitatively resembled PTCs: they demonstrated band-pass characteristics and asymmetric shapes with steeper high-frequency sides than low, but unlike PTCs they were consistently tuned to frequencies just above the probe frequency. When averaged across subjects the shapes of SFOAE STCs and PTCs showed agreement for most recording conditions, suggesting that PTCs are predominantly shaped by the frequency-selective filtering and suppressive effects of the cochlea. Individual SFOAE STCs often demonstrated irregular shapes (e.g., "double-tips"), particularly for the 1,000-Hz probe, which were not observed for the same subject's PTC. These results show the limited utility of SFOAE STCs to assess tuning in an individual.The irregularly shaped SFOAE STCs may be attributed to contributions from SFOAE sources distributed over a region of the basilar membrane extending beyond the probe characteristic place, as suggested by a repeatable pattern of SFOAE residual phase shifts observed in individual data.

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“…It is well known that using a tone as a masking signal when determining PTC leads to a beating phenomenon which is a factor that can have an eect on the research results [5,38,51]. It should also be added that Vinay and Moore [5] and Quaranta et al [31] applied a 1/3th-octave wide band of noise as a contralateral signal.…”

Section: Dpoae Level Changesmentioning

confidence: 99%

The Effect of Contralateral Signal on Distortion Product Otoacoustic Emissions and Psychophysical Tuning Curves at 1 and 2 kHz

Wicher

2013

Acta Phys. Pol. A

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The main aim of this work was to determine the inuence of contralateral stimulation (CS) on the psychophysical tuning curves (PTCs) and distortion product otoacoustic emissions (DPOAEs). PTCs and DPOAEs were measured in two modes: in the presence or absence of CS. The contralateral signal was a wideband noise (bandwidth 0.210 kHz) at a level of 50 dB sound pressure level (SPL). The primary tones (F1 and F2) were presented at levels of L1 = 60 dB SPL, and L2 = 50 dB SPL. The signal frequency used in the measurements of the PTC was 1 kHz or 2 kHz. For both PTC signal frequencies the CS signicantly reduces the sharpness of the PTCs. The average change in level of DPOAE under the inuence of CS throughout the whole range of frequencies takes an eect of suppression. The CS has a signicant eect on decreasing the value of the quality factor (Q10Roex) of PTCs (F (1, 9) = 19.36, p = 0.002). The CS caused a decrease in the level of DPOAE in 88% of cases. The maximum suppression of the DPOAE level occurs for the F2 frequency from 1 kHz to 2 kHz.

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Factors affecting psychophysical tuning curves for normally hearing subjects

Cited by 50 publications

References 54 publications

Evaluating the effects of olivocochlear feedback on psychophysical measures of frequency selectivity

Evaluating the effects of olivocochlear feedback on psychophysical measures of frequency selectivity

Stimulus-Frequency Otoacoustic Emission Suppression Tuning in Humans: Comparison to Behavioral Tuning

The Effect of Contralateral Signal on Distortion Product Otoacoustic Emissions and Psychophysical Tuning Curves at 1 and 2 kHz

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