Pediatric Assessment of Nonlinguistic Sound Perception: A Look Back and a Look Ahead to a Pediatric Nonlinguistic Sounds Test

2009 ◽  
Vol 19 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Yell Inverso
Keyword(s):  
Speech Perception ◽  
Daily Living ◽  
Incidental Learning ◽  
Central Importance ◽  
Environmental Sound ◽  
Behavioral Measures ◽  
Sound Perception ◽  
Look Ahead ◽  
Look Back ◽  
Picture Identification

Abstract The overwhelming majority of test measures to assess adult and pediatric cochlear implant candidacy, efficacy, and progress are based on speech perception. Nonlinguistic sounds have received comparatively little attention, despite their central importance for incidental learning, daily living and environmental sound awareness. The purpose of this review is to: 1. Highlight the importance of nonlinguistic sound perception, 2. Discuss currently available pediatric nonlinguistic sound perception profiles and behavioral measures, and 3. Describe both the Nonlinguistic Sounds Test (NLST) for adults and adolescents as well as the pediatric Picture-identification Nonlinguistic sounds Inventory for Children (PicNIC).

Environmental sound perception in adult patients with cochlear implants: a comparison with central auditory disorders

2004 ◽  
Vol 5 (S1) ◽  
pp. 90-92
Author(s):  
Kimitaka Kaga ◽  
Yusuke Akamatsu ◽  
Erika Ogata ◽  
Masae Shiroma ◽  
Sinichi Ishimoto ◽  
...  
Keyword(s):  
Cochlear Implants ◽  
Adult Patients ◽  
Environmental Sound ◽  
Sound Perception ◽  
Auditory Disorders

scholarly journals Conflict-Directed Backjumping Revisited

2001 ◽  
Vol 14 ◽  
pp. 53-81 ◽  
Author(s):  
X. Chen ◽  
P. Van Beek
Keyword(s):  
Constraint Satisfaction Problems ◽  
Local Consistency ◽  
Backtracking Search ◽  
Arc Consistency ◽  
Look Ahead ◽  
Variable Ordering ◽  
Look Back ◽  
The Look ◽  
The Relationship ◽  
Theoretical Results

In recent years, many improvements to backtracking algorithms for solving constraint satisfaction problems have been proposed. The techniques for improving backtracking algorithms can be conveniently classified as look-ahead schemes and look-back schemes. Unfortunately, look-ahead and look-back schemes are not entirely orthogonal as it has been observed empirically that the enhancement of look-ahead techniques is sometimes counterproductive to the effects of look-back techniques. In this paper, we focus on the relationship between the two most important look-ahead techniques---using a variable ordering heuristic and maintaining a level of local consistency during the backtracking search---and the look-back technique of conflict-directed backjumping (CBJ). We show that there exists a ``perfect'' dynamic variable ordering such that CBJ becomes redundant. We also show theoretically that as the level of local consistency that is maintained in the backtracking search is increased, the less that backjumping will be an improvement. Our theoretical results partially explain why a backtracking algorithm doing more in the look-ahead phase cannot benefit more from the backjumping look-back scheme. Finally, we show empirically that adding CBJ to a backtracking algorithm that maintains generalized arc consistency (GAC), an algorithm that we refer to as GAC-CBJ, can still provide orders of magnitude speedups. Our empirical results contrast with Bessiere and Regin's conclusion (1996) that CBJ is useless to an algorithm that maintains arc consistency.

The value of online surveys: a look back and a look ahead

2018 ◽  
Vol 28 (4) ◽  
pp. 854-887 ◽  
Author(s):  
Joel R. Evans ◽  
Anil Mathur
Keyword(s):  
Survey Research ◽  
Online Survey ◽  
New Technologies ◽  
Actual Behavior ◽  
Online Surveys ◽  
Content Type ◽  
Look Ahead ◽  
Look Back ◽  
The Future ◽  
The Look

Purpose The purpose of this paper is to present a detailed and critical look at the evolution of online survey research since Evans and Mathur’s (2005) article on the value of online surveys. At that time, online survey research was in its early stages. Also covered are the present and future states of online research. Many conclusions and recommendations are presented. Design/methodology/approach The look back focuses on online surveys, strengths and weaknesses of online surveys, the literature on several aspects of online surveys and online survey best practices. The look ahead focuses on emerging survey technologies and methodologies, and new non-survey technologies and methodologies. Conclusions and recommendations are provided. Findings Online survey research is used more frequently and better accepted by researchers than in 2005. Yet, survey techniques are still regularly transformed by new technologies. Non-survey digital research is also more prominent than in 2005 and can better track actual behavior than surveys can. Hybrid surveys will be widespread in the future. Practical implications The paper aims to provide insights for researchers with different levels of online survey experience. And both academics and practitioners should gain insights. Social implications Adhering to a strong ethics code is vital to gain respondents’ trust and to produce valid results. Originality/value Conclusions and recommendations are offered in these specific areas: defining concepts, understanding the future role of surveys, developing and implementing surveys and a survey code of ethics. The literature review cites more than 200 sources.

Millennium Teachers in a Global Context

2011 ◽  
pp. 1288-1288
Author(s):  
Craig Kissock
Keyword(s):  
Global Context ◽  
Integrating Technology ◽  
Use Of Technology ◽  
Look Ahead ◽  
Look Back ◽  
Technology In Learning

When preparing for a race, the coach will advise, “Do not look back at your competition; look forward to your goal.” Educators integrating technology into instruction often take this same view; they look ahead to win the race in preparing students to be effective in the use of technology in learning and in life.

scholarly journals Environmental Sound Training in Cochlear Implant Users

2015 ◽  
Vol 58 (2) ◽  
pp. 509-519 ◽  
Author(s):  
Valeriy Shafiro ◽  
Stanley Sheft ◽  
Sejal Kuvadia ◽  
Brian Gygi
Keyword(s):  
Cochlear Implant ◽  
Low Cost ◽  
Computer Training ◽  
Environmental Sound ◽  
Sound Perception ◽  
Environmental Sounds ◽  
Computer Based Training ◽  
Home Based ◽  
Average Improvement ◽  
Computer Based

Purpose The study investigated the effect of a short computer-based environmental sound training regimen on the perception of environmental sounds and speech in experienced cochlear implant (CI) patients. Method Fourteen CI patients with the average of 5 years of CI experience participated. The protocol consisted of 2 pretests, 1 week apart, followed by 4 environmental sound training sessions conducted on separate days in 1 week, and concluded with 2 posttest sessions, separated by another week without training. Each testing session included an environmental sound test, which consisted of 40 familiar everyday sounds, each represented by 4 different tokens, as well as the Consonant Nucleus Consonant (CNC) word test, and Revised Speech Perception in Noise (SPIN-R) sentence test. Results Environmental sounds scores were lower than for either of the speech tests. Following training, there was a significant average improvement of 15.8 points in environmental sound perception, which persisted 1 week later after training was discontinued. No significant improvements were observed for either speech test. Conclusions The findings demonstrate that environmental sound perception, which remains problematic even for experienced CI patients, can be improved with a home-based computer training regimen. Such computer-based training may thus provide an effective low-cost approach to rehabilitation for CI users, and potentially, other hearing impaired populations.

Generic Drugs—A Look Back and a Look Ahead

1990 ◽  
Vol 3 (3) ◽  
pp. 192-202
Author(s):  
Leon Lachman ◽  
Salvatore Turco ◽  
James T. O'Donnell
Keyword(s):  
Generic Drug ◽  
Generic Drugs ◽  
Drug Industry ◽  
Look Ahead ◽  
Look Back

This review includes the viewpoints of three pharmaceutical scientists tracing the origins of the generic drug industry, examining the recent generic drug controversies, and offering suggestions to hospital practitioners for coping with the controversies.

scholarly journals Cortical Function in Acute Severe Traumatic Brain Injury and at Recovery: A Longitudinal fMRI Case Study

2020 ◽  
Vol 10 (9) ◽  
pp. 604
Author(s):  
Karnig Kazazian ◽  
Loretta Norton ◽  
Teneille E. Gofton ◽  
Derek Debicki ◽  
Adrian M. Owen
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Speech Perception ◽  
Severe Traumatic Brain Injury ◽  
Resting State ◽  
Cortical Function ◽  
Sound Perception ◽  
Command Following ◽  
Resting State Connectivity ◽  
Recovery Of Consciousness

Differences in the functional integrity of the brain from acute severe brain injury to subsequent recovery of consciousness have not been well documented. Functional magnetic resonance imaging (fMRI) may elucidate this issue as it allows for the objective measurement of brain function both at rest and in response to stimuli. Here, we report the cortical function of a patient with a severe traumatic brain injury (TBI) in a critically ill state and at subsequent functional recovery 9-months post injury. A series of fMRI paradigms were employed to assess sound and speech perception, command following, and resting state connectivity. The patient retained sound perception and speech perception acutely, as indexed by his fMRI responses. Command following was absent acutely, but was present at recovery. Increases in functional connectivity across multiple resting state networks were observed at recovery. We demonstrate the clinical utility of fMRI in assessing cortical function in a patient with severe TBI. We suggest that hallmarks of the recovery of consciousness are associated with neural activity to higher-order cognitive tasks and increased resting state connectivity.

scholarly journals Effects of Age and Noise Exposure on Proxy Measures of Cochlear Synaptopathy

2019 ◽  
Vol 23 ◽  
pp. 233121651987730 ◽  
Author(s):  
Garreth Prendergast ◽  
Samuel Couth ◽  
Rebecca E. Millman ◽  
Hannah Guest ◽  
Karolina Kluk ◽  
...  
Keyword(s):  
Speech Perception ◽  
Noise Exposure ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Behavioral Measures ◽  
Speech Perception In Noise ◽  
Phase Discrimination ◽  
Age Related ◽  
Interaural Phase ◽  
Age Range

Although there is strong histological evidence for age-related synaptopathy in humans, evidence for the existence of noise-induced cochlear synaptopathy in humans is inconclusive. Here, we sought to evaluate the relative contributions of age and noise exposure to cochlear synaptopathy using a series of electrophysiological and behavioral measures. We extended an existing cohort by including 33 adults in the age range 37 to 60, resulting in a total of 156 participants, with the additional older participants resulting in a weakening of the correlation between lifetime noise exposure and age. We used six independent regression models (corrected for multiple comparisons), in which age, lifetime noise exposure, and high-frequency audiometric thresholds were used to predict measures of synaptopathy, with a focus on differential measures. The models for auditory brainstem responses, envelope-following responses, interaural phase discrimination, and the co-ordinate response measure of speech perception were not statistically significant. However, both age and noise exposure were significant predictors of performance on the digit triplet test of speech perception in noise, with greater noise exposure (unexpectedly) predicting better performance in the 80 dB sound pressure level (SPL) condition and greater age predicting better performance in the 40 dB SPL condition. Amplitude modulation detection thresholds were also significantly predicted by age, with older listeners performing better than younger listeners at 80 dB SPL. Overall, the results are inconsistent with the predicted effects of synaptopathy.

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