Psychometric functions for gap detection in noise measured from young and aged subjects

He, Ning‐ji; Horwitz, Amy R.; Dubno, Judy R.; Mills, John H.

doi:10.1121/1.427109

Cited by 102 publications

(131 citation statements)

References 45 publications

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“…8,9 In trying to locate the physiological mechanism of temporal resolution, some authors have suggested that auditory nerve fibers participate significantly in the process. 5,10,11 Other studies, however, have shown that processing is more central. [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] Temporal resolution depends on the separation of different auditory stimuli; the role of the initial part of the stimulus and the coding precision of this response are crucial.…”

Section: Introductionmentioning

confidence: 90%

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Estudo da vantagem da orelha direita em teste de detecção de gap

Samelli

Schochat²

2008

Rev. Bras. Otorrinolaringol.

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Temporal resolution hearing skills are based on the minimum time necessary to segregate or solve acoustic events. This skill is fundamental for speech comprehension and can be assessed by gap detection tests. Some studies point to a right ear advantage over the left ear in temporal resolution tasks, since there is a preferential role of the left hemisphere in analyzing the temporal aspects of the acoustic stimulus. Aim: determine if there are response differences (gap detection thresholds and percentage of correct answers) between right and left ears in a gap detection test. Study: experimental. Materials and Methods: the gap detection test was applied to 100 adult individuals, after carrying out other audiologic tests in order to rule out possible hearing and/or auditory processing disorders. Results: We observed gap detection thresholds and average correct answers percentages, which were similar for both ears, regardless of which ear started the test. Conclusion: There was no ear advantage in the gap detection task.

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Section: Introductionmentioning

confidence: 90%

“…[1][2][3][4][5][6][7] The auditory ability for temporal resolution is the minimum time required for separating or resolving acoustic events. 8,9 In trying to locate the physiological mechanism of temporal resolution, some authors have suggested that auditory nerve fibers participate significantly in the process.…”

Section: Introductionmentioning

confidence: 99%

Estudo da vantagem da orelha direita em teste de detecção de gap

Samelli

Schochat²

2008

Rev. Bras. Otorrinolaringol.

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confidence: 99%

“…The shortest gap that a listener can detect (relative to the standard) is called a gap detection threshold (GDT). Psychophysical GDTs are influenced by a number of stimulus factors, including marker bandwidth (Eddins, Hall, & Grose, 1992;Snell, Ison, & Frisina, 1994), marker duration (He, Horwitz, Dubno, & Mills, 1999), monotic, diotic, or dichotic presentation modes (Gordon-Salant & Fitzgibbons, 1999;He, et al, 1999;Lister & Roberts, 2005), and the spectral similarity of the markers before and after the gap (Lister, Besing & Koehnke, 2002;Oxenham, 2000).Behavioral studies have shown that, when the stimuli that mark the silent gap are noise bands of similar frequency, known as within-channel gap detection, the task is relatively easy and GDTs are small (Lister & Roberts, 2005;Lister, et al, 2002). When the noise bands that mark the gap are of different frequencies, known as across-channel gap detection, the task is more difficult and GDTs are larger (Lister & Roberts, 2005;Lister, et al, 2002).…”

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confidence: 99%

Cortical Evoked Response to Gaps in Noise: Within-Channel and Across-Channel Conditions

2007

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Objectives-The objective of this study was to describe the cortical evoked response to silent gaps in a group of young adults with normal hearing using stimulus conditions identical to those used in psychophysical studies of gap detection. Specifically, we sought to examine the P1-N1-P2 auditory evoked response to the onsets of stimuli (markers) defining a silent gap for withinchannel (spectrally identical markers) and across-channel (spectrally different markers) conditions using four perceptually-equated gap durations. It was hypothesized that (1) P1, N1, and P2 would be present and consistent for 1st marker (before the gap) onsets; (2) for within-channel markers, P1, N1, and P2 would be present for 2nd marker (after the gap) onsets only when the gap was of a duration equal to or larger than the behaviorally measured gap detection threshold; and (3) for the across-channel conditions, P1, N1, and P2 would be present for 2nd marker onsets regardless of gap duration. This is expected due to the additional cue of frequency change following the gap.Design-Twelve young adults (mean age 26 years) with normal hearing participated. Withinchannel and across-channel gap detection thresholds were determined using an adaptive psychophysical procedure. Next, cortical auditory evoked potentials (P1-N1-P2) were recorded with a 32-channel Neuro-scan™ electroencephalogram system using within-channel and acrosschannel markers identical to those used for the psychophysical task and four perceptually weighted gap durations: (1) individual listener's gap detection threshold; (2) above gap detection threshold; (3) below gap detection threshold; and (4) a 1-ms gap identical to the gap in the standard interval of the psychophysical task. P1-N1-P2 peak latencies and amplitudes were analyzed using repeated-measures analyses of variance. A temporal-spatial principal component analysis was also conducted.Results-The latency of P2 and the amplitude of P1, N1, and P2 were significantly affected by the acoustic characteristics of the 2nd marker as well as the duration of the gap. Larger amplitudes and shorter latencies were generally found for the conditions in which the acoustic cues were most salient (e.g., across-channel markers, 1st markers, large gap durations). Interestingly, the temporal-spatial principal component analysis revealed activity elicited by gap durations equal to gap detection threshold in the latency regions of 167 and 183 ms for temporal-parietal and rightfrontal spatial locations.Address for correspondence: Jennifer Lister, Department of Communication Sciences and Disorders, University of South Florida, 4202 E. Fowler Ave. PCD 1017, Tampa, FL 33620. jlister@cas.usf.edu.. HHS Public Access Author Manuscript Author ManuscriptAuthor Manuscript Author ManuscriptConclusions-The cortical response to a silent gap is unique to specific marker characteristics and gap durations among young adults with normal hearing. Specifically, when the onset of the 2nd marker is perceptually salient, the amplitude of the P1-N1-P2 re...

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“…However, the HI listeners in this study were on average older than the NH listeners in the study by Wojtczak et al (2012) used as a control group. A large number of studies have reported clear effects of age on gap detection and gap-duration discrimination for both within-channel and across-channel markers (Fitzgibbons and Gordon-Salant 1994;Schneider et al 1994;He et al 1999;Lister et al 2000Lister et al , 2002Lister and Roberts 2005). Since the NH and HI listeners compared in this study were not age-matched, some of the observed differences between their data may reflect poorer coding of temporal information or a reduced ability to integrate temporal information across frequency due to the age of the HI listeners.…”

Section: Age Versus Hearing Lossmentioning

confidence: 74%

Perception of Across-Frequency Asynchrony by Listeners with Cochlear Hearing Loss

Wojtczak

Beim

Micheyl

et al. 2013

JARO

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Cochlear hearing loss is often associated with broader tuning of the cochlear filters. Cochlear response latencies are dependent on the filter bandwidths, so hearing loss may affect the relationship between latencies across different characteristic frequencies. This prediction was tested by investigating the perception of synchrony between two tones exciting different regions of the cochlea in listeners with hearing loss. Subjective judgments of synchrony were compared with thresholds for asynchrony discrimination in a three-alternative forced-choice task. In contrast to earlier data from normal-hearing (NH) listeners, the synchronous-response functions obtained from the hearing-impaired (HI) listeners differed in patterns of symmetry and often had a very low peak (i.e., maximum proportion of "synchronous" responses). Also in contrast to data from NH listeners, the quantitative and qualitative correspondence between the data from the subjective and the forced-choice tasks was often poor. The results do not provide strong evidence for the influence of changes in cochlear mechanics on the perception of synchrony in HI listeners, and it remains possible that age, independent of hearing loss, plays an important role in temporal synchrony and asynchrony perception.

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Psychometric functions for gap detection in noise measured from young and aged subjects

Cited by 102 publications

References 45 publications

Estudo da vantagem da orelha direita em teste de detecção de gap

Estudo da vantagem da orelha direita em teste de detecção de gap

Cortical Evoked Response to Gaps in Noise: Within-Channel and Across-Channel Conditions

Perception of Across-Frequency Asynchrony by Listeners with Cochlear Hearing Loss

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