scholarly journals Fundamental-frequency discrimination using noise-band-vocoded harmonic complexes in older listeners with normal hearing

2015 ◽  
Vol 138 (3) ◽  
pp. 1687-1695 ◽  
Author(s):  
Kara C. Schvartz-Leyzac ◽  
Monita Chatterjee
Keyword(s):  
Fundamental Frequency ◽  
Frequency Discrimination ◽  
Normal Hearing ◽  
Noise Band

scholarly journals Task-dependent effects of nicotine treatment on auditory performance in young-adult and elderly human nonsmokers

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuping Sun ◽  
Michelle R. Kapolowicz ◽  
Matthew Richardson ◽  
Raju Metherate ◽  
Fan-Gang Zeng
Keyword(s):  
Frequency Modulation ◽  
Auditory Processing ◽  
Frequency Discrimination ◽  
Normal Hearing ◽  
Post Treatment ◽  
Intensity Discrimination ◽  
Modulation Identification ◽  
Baseline Performance ◽  
Auditory Performance ◽  
Pre Treatment

AbstractElectrophysiological studies show that nicotine enhances neural responses to characteristic frequency stimuli. Previous behavioral studies partially corroborate these findings in young adults, showing that nicotine selectively enhances auditory processing in difficult listening conditions. The present work extended previous work to include both young and older adults and assessed the nicotine effect on sound frequency and intensity discrimination. Hypotheses were that nicotine improves auditory performance and that the degree of improvement is inversely proportional to baseline performance. Young (19–23 years old) normal-hearing nonsmokers and elderly (61–80) nonsmokers with normal hearing between 500 and 2000 Hz received nicotine gum (6 mg) or placebo gum in a single-blind, randomized crossover design. Participants performed three experiments (frequency discrimination, frequency modulation identification, and intensity discrimination) before and after treatment. The perceptual differences were analyzed between pre- and post-treatment, as well as between post-treatment nicotine and placebo conditions as a function of pre-treatment baseline performance. Compared to pre-treatment performance, nicotine significantly improved frequency discrimination. Compared to placebo, nicotine significantly improved performance for intensity discrimination, and the improvement was more pronounced in the elderly with lower baseline performance. Nicotine had no effect on frequency modulation identification. Nicotine effects are task-dependent, reflecting possible interplays of subjects, tasks and neural mechanisms.

Effects of temporal fringes on fundamental-frequency discrimination

1998 ◽  
Vol 104 (5) ◽  
pp. 3006-3018 ◽  
Author(s):  
Christophe Micheyl ◽  
Robert P. Carlyon
Keyword(s):  
Fundamental Frequency ◽  
Frequency Discrimination

Effect of Realistic Test Conditions on Spectral and Temporal Processing in Normal-Hearing Listeners

2021 ◽  
Vol 30 (1) ◽  
pp. 160-169
Author(s):  
Yang-Soo Yoon ◽  
Callie Michelle Boren ◽  
Brianna Diaz
Keyword(s):  
Temporal Processing ◽  
Detection Threshold ◽  
Frequency Discrimination ◽  
Normal Hearing ◽  
Discrimination Threshold ◽  
Test Environment ◽  
Test Conditions ◽  
Significant Difference ◽  
Test Order ◽  
Pure Tones

Purpose To measure the effect of testing conditions (in the soundproof booth vs. quiet room), test order, and number of test sessions on spectral and temporal processing in normal-hearing (NH) listeners. Method Thirty-two adult NH listeners participated in the three experiments. For all three experiments, the stimuli were presented to the left ear at the subjects' most comfortable level through headphones. All tests were administered in an adaptive three-alternative forced-choice paradigm. Experiment 1 was designed to compare the effect of soundproof booth and quiet room test conditions on amplitude modulation detection threshold and modulation frequency discrimination threshold with each of the five modulation frequencies. Experiment 2 was designed to compare the effect of two test orders on the frequency discrimination thresholds under the quiet room test conditions. The thresholds were first measured in the ascending and descending order of four pure tones, and then with counterbalanced order. For Experiment 3, the amplitude discrimination threshold under the quiet room testing condition was assessed 3 times to determine the effect of the number of test sessions. Then the thresholds were compared over the sessions. Results Results showed no significant effect of test environment. The test order is an important variable for frequency discrimination, particularly between piano tunes and pure tones. Results also show no significant difference across test sessions. Conclusions These results suggest that a controlled test environment may not be required in spectral and temporal assessment for NH listeners. Under the quiet test environment, a single outcome measure is sufficient, but test orders should be counterbalanced.

Role of Fundamental Frequency Differences in the Perceptual Separation of Competing Vowel Sounds by Listeners With Normal Hearing and Listeners With Hearing Loss

1997 ◽  
Vol 40 (6) ◽  
pp. 1434-1444 ◽  
Author(s):  
Kathryn Hoberg Arehart ◽  
Catherine Arriaga King ◽  
Kelly S. McLean-Mudgett
Keyword(s):  
Hearing Loss ◽  
Fundamental Frequency ◽  
Normal Hearing ◽  
Average Increase ◽  
Identification Task ◽  
Vowel Identification ◽  
Overall Performance ◽  
The Mean ◽  
Perceptual Separation

This study compared the ability of listeners with normal hearing and listeners with moderate to moderately-severe sensorineural hearing loss to use fundamental frequency differences (ΔF 0 ) in the identification of monotically presented simultaneous vowels. Two psychophysical procedures, double vowel identification and masked vowel identification, were used to measure identification performance as a function of ΔF 0 (0 through 8 semitones) between simultaneous vowels. Performance in the double vowel identification task was measured by the percentage of trials in which listeners correctly identified both vowels in a double vowel. The masked vowel identification task yielded thresholds representing signal-to-noise ratios at which listeners could just identify target vowels in the presence of a masking vowel. In the double vowel identification task, both listeners with normal hearing and listeners with hearing loss showed significant ΔF 0 benefit: Between 0 and 2 semitones, listeners with normal hearing showed an 18.5% average increase in performance; listeners with hearing loss showed a 16.5% average increase. In the masked vowel identification task, both groups showed significant ΔF 0 benefit. However, the mean benefit associated with ΔF 0 differences in the masked vowel task was more than twice as large in listeners with normal hearing 9.4 dB) when compared to listeners with hearing loss (4.4 dB), suggesting less ΔF 0 benefit in listeners with hearing loss. In both tasks, overall performance of listeners with hearing loss was significantly worse than performance of listeners with normal hearing. Possible reasons for reduced ΔF 0 benefit and decreased overall performance in listeners with hearing loss include reduced audibility of vowel sounds and deficits in spectro-temporal processing.

Children With Normal Hearing Are Efficient Users of Fundamental Frequency and Vocal Tract Length Cues for Voice Discrimination

2020 ◽  
Vol 41 (1) ◽  
pp. 182-193 ◽  
Author(s):  
Yael Zaltz ◽  
Raymond L. Goldsworthy ◽  
Laurie S. Eisenberg ◽  
Liat Kishon-Rabin
Keyword(s):  
Fundamental Frequency ◽  
Vocal Tract ◽  
Normal Hearing ◽  
Tract Length ◽  
Voice Discrimination

Effect of noise on the detectability and fundamental frequency discrimination of complex tones

2006 ◽  
Vol 120 (2) ◽  
pp. 957-965 ◽  
Author(s):  
Hedwig Gockel ◽  
Brian C. J. Moore ◽  
Christopher J. Plack ◽  
Robert P. Carlyon
Keyword(s):  
Fundamental Frequency ◽  
Frequency Discrimination ◽  
Complex Tones
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