Examining replicability of an otoacoustic measure of cochlear function during selective attention
| Autor: | Andrew J. Oxenham, Jordan A. Beim, Magdalena Wojtczak |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male medicine.medical_specialty Auditory Pathways Visual perception Acoustics and Ultrasonics Otoacoustic Emissions Spontaneous Stimulus (physiology) Audiology 01 natural sciences Bootstrap analysis Cochlear function 03 medical and health sciences 0302 clinical medicine Arts and Humanities (miscellaneous) Reflex 0103 physical sciences Attentional modulation medicine Humans Auditory pathways Attention Selective attention 010301 acoustics Cochlea Reproducibility of Results Middle Aged Psychological and Physiological Acoustics Acoustic Stimulation Auditory Perception Speech Perception Visual Perception Female Psychology Photic Stimulation 030217 neurology & neurosurgery |
| Zdroj: | The Journal of the Acoustical Society of America. 144:2882-2895 |
| ISSN: | 0001-4966 |
| Popis: | Attention to a target stimulus within a complex scene often results in enhanced cortical representations of the target relative to the background. It remains unclear where along the auditory pathways attentional effects can first be measured. Anatomy suggests that attentional modulation could occur through corticofugal connections extending as far as the cochlea itself. Earlier attempts to investigate the effects of attention on human cochlear processing have revealed small and inconsistent effects. In this study, stimulus-frequency otoacoustic emissions were recorded from a total of 30 human participants as they performed tasks that required sustained selective attention to auditory or visual stimuli. In the first sample of 15 participants, emission magnitudes were significantly weaker when participants attended to the visual stimuli than when they attended to the auditory stimuli, by an average of 5.4 dB. However, no such effect was found in the second sample of 15 participants. When the data were pooled across samples, the average attentional effect was significant, but small (2.48 dB), with 12 of 30 listeners showing a significant effect, based on bootstrap analysis of the individual data. The results highlight the need for considering sources of individual differences and using large sample sizes in future investigations.Attention to a target stimulus within a complex scene often results in enhanced cortical representations of the target relative to the background. It remains unclear where along the auditory pathways attentional effects can first be measured. Anatomy suggests that attentional modulation could occur through corticofugal connections extending as far as the cochlea itself. Earlier attempts to investigate the effects of attention on human cochlear processing have revealed small and inconsistent effects. In this study, stimulus-frequency otoacoustic emissions were recorded from a total of 30 human participants as they performed tasks that required sustained selective attention to auditory or visual stimuli. In the first sample of 15 participants, emission magnitudes were significantly weaker when participants attended to the visual stimuli than when they attended to the auditory stimuli, by an average of 5.4 dB. However, no such effect was found in the second sample of 15 participants. When the data were poole... |
| Databáze: | OpenAIRE |
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