Amplitude And Latency Studies Of The Averaged Auditory Evoked Responses To Tones Of Different Intensities

Khechinashvili, S. N.; Kevanishvili, Z. Sh.; Kajaia, O. A.

doi:10.3109/00016487309121527

Cited by 16 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the intensity of the stimulus increases, peak latencies decrease and peak amplitudes increase [Adler and Adler, 1989;Beagley and Knight, 1967;Botte et al, 1975;Bruneau et al, 1985;Butler et al, 1969;Khechinashvili et al, 1973;Martin and Boothroyd, 2000;McCandless and Best, 1966;Moore and Rose, 1969;Picton et al, 1977;Polich et al, 1988;Rapin et al, 1966;Roth et al, 1984;Spoor et al, 1969;Uziel and Seneclause, 1978]. The unaided results of this experiment are consistent with these published findings.…”

Section: Effect Of Intensitysupporting

confidence: 83%

Effects of Hearing Aid Amplification and Stimulus Intensity on Cortical Auditory Evoked Potentials

et al. 2007

View full text Add to dashboard Cite

Hearing aid amplification can be used as a model for studying the effects of auditory stimulation on the central auditory system (CAS). We examined the effects of stimulus presentation level on the physiological detection of sound in unaided and aided conditions. P1, N1, P2, and N2 cortical evoked potentials were recorded in sound field from 13 normal-hearing young adults in response to a 1000-Hz tone presented at seven stimulus intensity levels. As expected, peak amplitudes increased and peak latencies decreased with increasing intensity for unaided and aided conditions. However, there was no significant effect of amplification on latencies or amplitudes. Taken together, these results demonstrate that 20 dB of hearing aid gain affects neural responses differently than 20 dB of stimulus intensity change. Hearing aid signal processing is discussed as a possible contributor to these results. This study demonstrates (1) the importance of controlling for stimulus intensity when evoking responses in aided conditions, and (2) the need to better understand the interaction between the hearing aid and the CAS.

show abstract

Section: Effect Of Intensitysupporting

confidence: 83%

Effects of Hearing Aid Amplification and Stimulus Intensity on Cortical Auditory Evoked Potentials

et al. 2007

View full text Add to dashboard Cite

show abstract

“…Similarly, significant effects for intensity were observed for all CAEP responses, except for P2 latency at Cz, and P2 latency GFP (Table 4). Shorter peak latencies signify decreased neural conduction time, and higher amplitudes represent increased response strength [40][41][42][43][44][45][46][47][48][49][50][51][52][53]. Similar patterns were observed in the present study, especially for P1 and N1 responses.…”

Section: Effect Of Intensity Level On Loudness Perception Caep and Pu...supporting

confidence: 85%

“…Previous studies have shown that NH listeners exhibit larger pupil responses with increasing intensity [46][47][48], as well as shorter peak latencies and higher amplitudes for CAEP responses [49][50][51][52][53][54][55][56][57][58][59][60][61][62]. Other previous studies showed that HA amplification reduced CAEP amplitude [63] or had no effect on CAEP responses [62,64].…”

Section: Introductionmentioning

confidence: 99%

Relationship between Behavioral and Objective Measures of Sound Intensity in Normal-Hearing Listeners and Hearing-Aid Users: A Pilot Study

et al. 2022

View full text Add to dashboard Cite

Background: For hearing-impaired individuals, hearing aids are clinically fit according to subjective measures of threshold and loudness. The goal of this study was to evaluate objective measures of loudness perception that might benefit hearing aid fitting. Method: Seventeen adult hearing aid users and 17 normal-hearing adults participated in the study. Outcome measures including categorical loudness scaling, cortical auditory evoked potentials (CAEPs), and pupillometry. Stimuli were 1-kHz tone bursts presented at 40, 60, and 80 dBA. Results: Categorical loudness scaling showed that loudness significantly increased with intensity for all participants (p < 0.05). For CAEPs, high intensity was associated with greater P1, N1, and P2 peak amplitude for all listeners (p < 0.05); a significant but small effect of hearing aid amplification was observed. For all participants, pupillometry showed significant effects of high intensity on pupil dilation (p < 0.05); there was no significant effect of hearing aid amplification. A Focused Principal Component analysis revealed significant correlations between subjective loudness and some of the objective measures. Conclusion: The present data suggest that intensity had a significant impact on loudness perception, CAEPs, and pupil response. The correlations suggest that pupillometry and/or CAEPs may be useful in determining comfortable amplification for hearing aids.

show abstract

“…For example, neural studies on loudness perception have shown that increases in stimulus intensity do not necessarily lead to increases in neural responses. For example, an increase in stimulus intensity beyond a certain level (e.g., >75 dB) could trigger either a decrease or levelling in brain responses as indexed by the average evoked response (AER) amplitude (Khechinashvili, et al, 1973;Butler et al, 1969). This is in line with the observation that in the visual, auditory and somatosensory domains, neural responses (e.g., AER) tend to increase initially as a reaction to increasing intensity, but tend to plateau or decrease beyond a certain intensity level (Buschsbaum, 1976).…”

Section: The Present Studymentioning

confidence: 99%

Multiple prosodic meanings are conveyed through separate pitch ranges: Evidence from perception of focus and surprise in Mandarin Chinese

Liu

Zhang

et al. 2021

Cogn Affect Behav Neurosci

View full text Add to dashboard Cite

F0 variation is a crucial feature in speech prosody, which can convey linguistic information such as focus and paralinguistic meanings such as surprise. How can multiple layers of information be represented with F0 in speech: are they divided into discrete layers of pitch or overlapped without clear divisions? We investigated this question by assessing pitch perception of focus and surprise in Mandarin Chinese. Seventeen native Mandarin listeners rated the strength of focus and surprise conveyed by the same set of synthetically manipulated sentences. An fMRI experiment was conducted to assess neural correlates of the listeners' perceptual response to the stimuli. The results showed that behaviourally, the perceptual threshold for focus was 3 semitones and that for surprise was 5 semitones above the baseline. Moreover, the pitch range of 5-12 semitones above the baseline signalled both focus and surprise, suggesting a considerable overlap between the two types of prosodic information within this range. The neuroimaging data positively correlated with the variations in behavioural data. Also, a ceiling effect was found as no significant behavioural differences or neural activities were shown after reaching a certain pitch level for the perception of focus and surprise respectively. Together, the results suggest that different layers of prosodic information are represented in F0 through different pitch ranges: paralinguistic information is represented at a pitch range beyond that used by linguistic information. Meanwhile, the representation of paralinguistic information is achieved without obscuring linguistic prosody, thus allowing F0 to represent the two layers of information in parallel.

show abstract

Amplitude And Latency Studies Of The Averaged Auditory Evoked Responses To Tones Of Different Intensities

Cited by 16 publications

References 10 publications

Effects of Hearing Aid Amplification and Stimulus Intensity on Cortical Auditory Evoked Potentials

Effects of Hearing Aid Amplification and Stimulus Intensity on Cortical Auditory Evoked Potentials

Relationship between Behavioral and Objective Measures of Sound Intensity in Normal-Hearing Listeners and Hearing-Aid Users: A Pilot Study

Multiple prosodic meanings are conveyed through separate pitch ranges: Evidence from perception of focus and surprise in Mandarin Chinese

Contact Info

Product

Resources

About