scholarly journals Effects of Noise and Serial Position on Free Recall of Spoken Words and Pupil Dilation during Encoding in Normal-Hearing Adults

2021 ◽  
Vol 11 (2) ◽  
pp. 277
Author(s):  
Miseung Koo ◽  
Jihui Jeon ◽  
Hwayoung Moon ◽  
Myungwhan Suh ◽  
Junho Lee ◽  
...  
Keyword(s):  
Free Recall ◽  
Memory Load ◽  
Stimulus Presentation ◽  
Normal Hearing ◽  
Pupil Dilation ◽  
Recall Task ◽  
Impaired Hearing ◽  
Initial Stimulus ◽  
Spoken Words ◽  
Babble Noise

This preliminary study assessed the effects of noise and stimulus presentation order on recall of spoken words and recorded pupil sizes while normal-hearing listeners were trying to encode a series of words for a subsequent recall task. In three listening conditions (stationary noise in Experiment 1; quiet versus four-talker babble in Experiment 2), participants were assigned to remember as many words as possible to recall them in any order after each list of seven sentences. In the two noise conditions, lists of sentences fixed at 65 dB SPL were presented at an easily audible level via a loudspeaker. Reading span (RS) scores were used as a grouping variable, based on a median split. The primacy effect was present apart from the noise interference, and the high-RS group significantly outperformed the low-RS group at free recall measured in the quiet and four-talker babble noise conditions. RS scores were positively correlated with free-recall scores. In both quiet and four-talker babble noise conditions, sentence baselines after correction to the initial stimulus baseline increased significantly with increasing memory load. Larger sentence baselines but smaller peak pupil dilations seemed to be associated with noise interruption. The analysis method of pupil dilation used in this study is likely to provide a more thorough understanding of how listeners respond to a later recall task in comparison with previously used methods. Further studies are needed to confirm the applicability of our method in people with impaired hearing using multiple repetitions to estimate the allocation of relevant cognitive resources.

scholarly journals Recall of Reverberant Speech in Quiet and Four-Talker Babble Noise

2021 ◽  
Vol 11 (7) ◽  
pp. 891
Author(s):  
Miseung Koo ◽  
Jihui Jeon ◽  
Hwayoung Moon ◽  
Myung-Whan Suh ◽  
Jun-Ho Lee ◽  
...  
Keyword(s):  
Free Recall ◽  
Speech Intelligibility ◽  
Signal To Noise Ratio ◽  
Recall Performance ◽  
Memory Performance ◽  
Pupil Dilation ◽  
Recall Task ◽  
Free Recall Task ◽  
Pupillary Responses ◽  
Target Words

Using behavioral evaluation of free recall performance, we investigated whether reverberation and/or noise affected memory performance in normal-hearing adults. Thirty-four participants performed a free-recall task in which they were instructed to repeat the initial word after each sentence and to remember the target words after each list of seven sentences, in a 2 (reverberation) × 2 (noise) factorial design. Pupil dilation responses (baseline and peak pupil dilation) were also recorded sentence-by-sentence while the participants were trying to remember the target words. In noise, speech was presented at an easily audible level using an individualized signal-to-noise ratio (95% speech intelligibility). As expected, recall performance was significantly lower in the noisy environment than in the quiet condition. Regardless of noise interference or reverberation, sentence- baseline values gradually increased with an increase in the number of words to be remembered for a subsequent free-recall task. Long reverberation time had no significant effect on memory retrieval of verbal stimuli or pupillary responses during encoding.

scholarly journals The Effects of Listener's Familiarity about a Talker on the Free Recall Task of Spoken Words

i-Perception ◽  
10.1068/ic793 ◽  
2011 ◽  
Vol 2 (8) ◽  
pp. 793-793
Author(s):  
Chikako Oda ◽  
Naoshi Hiraoka ◽  
Shintaro Funahashi
Keyword(s):  
Free Recall ◽  
Recall Task ◽  
Free Recall Task ◽  
Spoken Words

Effects of Stimulus Presentation Level on Stop Consonant Identification in Normal-Hearing and Hearing-Impaired Listeners

2002 ◽  
Vol 13 (03) ◽  
pp. 154-159 ◽  
Author(s):  
Patrick N. Plyler ◽  
Mark S. Hedrick
Keyword(s):  
Stop Consonant ◽  
Stimulus Presentation ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Impaired Hearing ◽  
Boundary Values ◽  
Hearing Sensitivity ◽  
Speech Stimuli ◽  
Presentation Level ◽  
Boundary Shift

The purpose of the present study was to determine whether varying the presentation level of stop consonant stimuli resulted in similar phonetic boundary shifts for listeners with normal and impaired hearing. Sixteen normal-hearing and 16 hearing-impaired listeners categorized synthetic speech stimuli as /b/, /d/, or /g/. The onset frequency of F2 varied from 900 to 2300 Hz (100-Hz steps), and the presentation level varied from 92 to 62 dB SPL (10-dB steps) for each stimulus presentation. Hearing-impaired listeners had significantly more missing boundary values than normal-hearing listeners; however, the correlation between the number of missing boundary values and hearing sensitivity was not significant. Comparison of boundary shift with level demonstrated that hearing-impaired listeners had a smaller boundary shift with increasing level than normal-hearing listeners. The amount of boundary shift was not correlated with audibility. The results of the current study suggest that increasing the presentation level of a signal does not result in performance similar to that of listeners with normal hearing.

Acquisition and Clustering in Multiple-Trial Free Recall as a Function of Meaningfulness of Dissyllables

1973 ◽  
Vol 33 (1) ◽  
pp. 27-30
Author(s):  
Marianne W. Segal ◽  
Gayle A. Olson
Keyword(s):  
Free Recall ◽  
Recall Task ◽  
Free Recall Task ◽  
Superior Recall ◽  
Associative Relatedness

Lists of 10 dissyllables varying in meaningfulness were presented to subjects in a multiple-trial free recall task. Measures of recall and clustering showed superior recall and greater amounts of clustering for the high-meaningful list than for the low-meaningful list. Differential item integration and associative relatedness were mechanisms employed to explain the differences.

Automated Audiometry in Quiet and Simulated Exam Room Noise for Listeners with Normal Hearing and Impaired Hearing

2021 ◽  
Author(s):  
Brianna N. Bean ◽  
Richard A. Roberts ◽  
Erin M. Picou ◽  
Gina P. Angley ◽  
Amanda J. Edwards
Keyword(s):  
Pure Tone ◽  
Local Area ◽  
Normal Hearing ◽  
Automated Testing ◽  
Impaired Hearing ◽  
Step Size ◽  
Low Level ◽  
Exam Room ◽  
Controlled Environments ◽  
Air Conduction

Abstract Background Up to 80% of audiograms could be automated which would allow more time for provision of specialty services. Ideally, automated audiometers would provide accurate results for listeners with impaired hearing as well as normal hearing. Additionally, accurate results should be provided both in controlled environments like a sound-attenuating room but also in test environments that may support greater application when sound-attenuating rooms are unavailable. Otokiosk is an iOS-based system that has been available for clinical use, but there are not yet any published validation studies using this product. Purpose The purpose of this project was to complete a validation study on the OtoKiosk automated audiometry system in quiet and in low-level noise, for listeners with normal hearing and for listeners with impaired hearing. Research Design Pure tone air conduction thresholds were obtained for each participant for three randomized conditions: standard audiometry, automated testing in quiet, and automated testing in noise. Noise, when present, was 35 dBA overall and was designed to emulate an empty medical exam room. Study Sample Participants consisted of 11 adults with hearing loss and 15 adults with normal hearing recruited from the local area. Data Collection and Analysis Thresholds were measured at 500, 1000, 2000, and 4000 Hz using the Otokiosk system that incorporates a modified Hughson-Westlake method. Results were analyzed using descriptive statistics and also by a linear mixed-effects model to compare thresholds obtained in each condition. Results Across condition and participant group 73.6% of thresholds measured with OtoKiosk were within ± 5 dB of the conventionally measured thresholds; 92.8% were within ± 10 dB. On average, differences between tests were small. Pairwise comparisons revealed thresholds were ∼3.5–4 dB better with conventional audiometry than with the mobile application in quiet and in noise. Noise did not affect thresholds measured with OtoKiosk. Conclusions The OtoKiosk automated hearing test measured pure tone air conduction thresholds from 500 - 4000 Hz at slightly higher thresholds than conventional audiometry, but less than the smallest typical 5 dB clinical step-size. Our results suggest OtoKiosk is a reasonable solution for sound booths and exam rooms with low-level background noise.

Experimental Studies on the Uncomfortable Loudness Level

1971 ◽  
Vol 14 (2) ◽  
pp. 262-270 ◽  
Author(s):  
S. D. G. Stephens ◽  
C. M. B. Anderson
Keyword(s):  
Test Anxiety ◽  
Free Field ◽  
Experimental Studies ◽  
Stimulus Presentation ◽  
Normal Hearing ◽  
The Other ◽  
Personality Measures ◽  
Loudness Level

A number of experimental determinations of the uncomfortable loudness level (ULL) at 1000 Hz were made on several groups of normal-hearing subjects, using various methods of stimulus presentation and applying different personality measures to the subjects. The same mean levels were found for both earphone and free-field presentations. In experienced subjects the monaural-binaural difference was between 2.5 and 4 dB in different experiments. In naive subjects this difference was 6 dB. In two groups of subjects, ULL was found to be significantly negatively correlated with their test anxiety scores, but this correlation did not hold for the other two groups tested. Naive subjects showed little difference in intersubject variance with the manual or Bekesy presentation techniques.

Intelligibility of Modified Speech for Young Listeners With Normal and Impaired Hearing

2002 ◽  
Vol 45 (5) ◽  
pp. 1027-1038 ◽  
Author(s):  
Rosalie M. Uchanski ◽  
Ann E. Geers ◽  
Athanassios Protopapas
Keyword(s):  
Speech Processing ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Processing Conditions ◽  
Impaired Hearing ◽  
Slowing Down ◽  
Listening In Noise ◽  
Hearing Children ◽  
Impaired Children ◽  
Hearing Impaired Children

Exposure to modified speech has been shown to benefit children with languagelearning impairments with respect to their language skills (M. M. Merzenich et al., 1998; P. Tallal et al., 1996). In the study by Tallal and colleagues, the speech modification consisted of both slowing down and amplifying fast, transitional elements of speech. In this study, we examined whether the benefits of modified speech could be extended to provide intelligibility improvements for children with severe-to-profound hearing impairment who wear sensory aids. In addition, the separate effects on intelligibility of slowing down and amplifying speech were evaluated. Two groups of listeners were employed: 8 severe-to-profoundly hearingimpaired children and 5 children with normal hearing. Four speech-processing conditions were tested: (1) natural, unprocessed speech; (2) envelope-amplified speech; (3) slowed speech; and (4) both slowed and envelope-amplified speech. For each condition, three types of speech materials were used: words in sentences, isolated words, and syllable contrasts. To degrade the performance of the normal-hearing children, all testing was completed with a noise background. Results from the hearing-impaired children showed that all varieties of modified speech yielded either equivalent or poorer intelligibility than unprocessed speech. For words in sentences and isolated words, the slowing-down of speech had no effect on intelligibility scores whereas envelope amplification, both alone and combined with slowing-down, yielded significantly lower scores. Intelligibility results from normal-hearing children listening in noise were somewhat similar to those from hearing-impaired children. For isolated words, the slowing-down of speech had no effect on intelligibility whereas envelope amplification degraded intelligibility. For both subject groups, speech processing had no statistically significant effect on syllable discrimination. In summary, without extensive exposure to the speech processing conditions, children with impaired hearing and children with normal hearing listening in noise received no intelligibility advantage from either slowed speech or envelope-amplified speech.

scholarly journals Incidental information processing and verbal intelligence

2017 ◽  
Vol 10 (2) ◽  
pp. 5-19
Author(s):  
E.V. Gavrilova ◽  
S.S. Belova
Keyword(s):  
Information Processing ◽  
Free Recall ◽  
Recall Task ◽  
Cognitive Tasks ◽  
Processing Conditions ◽  
Verbal Information ◽  
Verbal Intelligence ◽  
Free Recall Task ◽  
Creative Task ◽  
Verbal Tasks

This article aims to reveal interaction between verbal intelligence and efficiency of intentional and incidental verbal information processing. Participants were exposed to pairs of words about which they have to decide whether a city name was presented in each pair. Thus, semantics of words was processed intentionally, whereas their phonemic features (rhymed vs. unrhymed pairs) were processed incidentally. The efficiency of stimuli processing was estimated in two different cognitive tasks – word free-recall task and word usage in new creative task. It was found that verbal intelligence was positively correlated with number of recalled stimuli which were congruent to both intentional and incidental processing conditions. Moreover, verbal intelligence was positively correlated with usage of incongruent stimuli which were processed incidentally in creative task. The results are discussed in terms of contemporary frameworks of information processing in verbal tasks.

scholarly journals It matters how to recall – task differences in retrieval practice

2020 ◽  
Vol 48 (6) ◽  
pp. 699-728
Author(s):  
Tino Endres ◽  
Lena Kranzdorf ◽  
Vivien Schneider ◽  
Alexander Renkl
Keyword(s):  
Free Recall ◽  
Retrieval Practice ◽  
Situational Interest ◽  
Recall Task ◽  
Expository Texts ◽  
Free Recall Task ◽  
Short Answer ◽  
Task Differences ◽  
Calibration Free ◽  
Metacognitive Calibration

AbstractThe type of a recall task may substantially influence the effects of learning by retrieval practice. In a within-subject design, 54 university students studied two expository texts, followed by retrieval practice with either short-answer tasks (targeted retrieval) or a free-recall task (holistic retrieval). Concerning the direct effects of retrieval practice, short-answer tasks led to increased retention of directly retrieved targeted information from the learning contents, whereas free-recall tasks led to better retention of further information from the learning contents. Concerning indirect effects, short-answer tasks improved metacognitive calibration; free-recall tasks increased self-efficacy and situational interest. These findings confirm the assumption that the effects of retrieval practice depend on the type of recall task: short-answer tasks help us remember targeted information units and foster metacognitive calibration. Free-recall tasks help us remember a broader spectrum of information, and they foster motivational factors.

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