ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Evidence for auditory processing limitations based on the use of two-response consonant-vowel (CV) dichotic listening tasks is reviewed. These studies show that low verbal children obtain fewer trials on which both items are correctly identified (double correct responses). A study is reported comparing a group of good and poor readers on the dichotic CV task. These data are then analyzed in terms of a normative model which attempts to show the effects of overall performance and guessing on double correct responses. It is concluded, in terms of the model, that the poor double correct performance of the poor readers is the direct result of poor auditory processing capacity.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

The relationship between two dichotic listening tasks was studied. The two dichotic tests used were the Staggered Spondaic Word (SSW) test and the directed Dichotic Consonant-Vowel (CV) test. These measures were administered to 104 children between the ages of 6.0 and 8.0 yrs. The subjects were divided into two groups according to their Token test scores with group I having normal Token test scores and group II having below average scores on the Token test. When the performances of the two groups on the SSW test were compared, a significant difference was found between them on the right and left competing conditions of the test. There was no difference between the groups on any response bias. On the directed Dichotic CV test the two groups were significantly different on the right ear scores but not on the left ear scores under both directed conditions. The groups were also significantly different on the directed right task when the difference between the two ear scores was compared but not on the directed left task. It was concluded that there is a relationship between these two dichotic measures and the Token Test for Children.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

The performance of normal and learningdisabled children on a dichotic listening task using 30 paired consonant-vowel (CV) syllables was investigated in a series of studies. The effects of gender, developmental level, and prestimulus cuing on assessed auditory asymmetries were examined. In addition to providing normative data, the results of these studies are discussed as they relate to theoretical notions of cerebral asymmetries in normal and learningdisabled children and as they pertain to clinical diagnosis of childhood learning disabilities.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

The Staggered Spondee Word (SSW) test is a dichotic listening test that has been frequently used in the evaluation of auditory perceptual abilities in children with language and learning problems. Interpretation of this test is based on scores obtained under noncompeting and competing portions of the test stimuli, and on response biases that include ear and order effects, reversals, the type A pattern, and the total bias score. Alternate methods of interpreting SSW results are suggested. Data obtained on 57 children referred for central auditory and language testing are presented for illustration.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Two experiments were performed using dichotic presentation of the consonant-vowel (CV) syllables /pa/, /ba/, /ta/, /da/, /ka/, and /ga/. The stimuli were constructed with no temporal offsets between channels (±2 msec) and with temporal offsets of 30, 60, and 90 msec between channels. Data were analyzed for ear asymmetry (right ear advantage), doublecorrect responses (auditory capacity), and the effects of temporal offsets (the lag effect). In experiment 1, 32 normal children (mean age at entry = 6 yrs 6 mos) were evaluated once each year over a 4-yr period. Results showed no significant change in ear laterality over the 4 yrs. However, there was a significant, age-related increase in auditory capacity. None of the subject groups showed a significant lag effect. In experiment 2 results from 17 children (mean age = 9.3 yrs) enrolled in a school for learning disability who were identified as having significant auditory processing problems were compared to age- and sex-matched normal controls. Results failed to show a significant group difference for ear asymmetry, auditory capacity, or the lag effect. Case studies are presented comparing two learning-disabled children with two normal children matched for age and sex to illustrate the results for the learning-impaired population. Overall, findings indicate that the dichotic CV syllables test has limited prognostic value in identifying auditory processing dysfunction in children classified as having “learning disability.”

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Third-order synthetic sentences were aligned to make them suitable for dichotic presentation. These dichotic sentence materials were then administered to 14 normal listeners and 48 hearing-impaired subjects to determine the influence of peripheral hearing loss on test performance. Results suggest that the Dichotic Sentence Identification test is resistant to the influence of peripheral hearing loss until the pure-tone average of 500, 1000, and 2000 Hz exceeds approximately 50 dB. Beyond this level, degree of peripheral hearing loss limits its value for detecting central auditory disorder. Data are also provided on six persons with either confirmed or suspected lesions involving retrocochlear structures.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Thirteen cortically injured subjects were tested in a dichotic temporal order judgment task using speech and nonspeech stimuli. Subjects were required only to judge which ear was stimulated first on each trial. All were young men and neurologically normal before receiving missile wounds. Subjects with injuries outside the temporal and frontal lobes performed the dichotic tasks at levels comparable to that of neurologically normal subjects. In contrast, subjects with temporal lobe lesions performed at near chance levels on all of the conditions. Individuals with frontal lobe damage showed moderate impairment on the dichotic tasks.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

A total of 20 “definite” multiple sclerosis patients were administered three commonly used dichotic speech paradigms. The tests included the Consonant-Vowel (CV) Nonsense Syllable test, the Synthetic Sentence Identification (SSI) test, and the Staggered Spondaic Word (SSW) test. Results of the test procedures were variable, with the higher percentage of abnormalities obtained with the CV test, followed by the SSI, and finally, the SSW. These findings suggest that brain stem lesions may influence higher order auditory processing as measured by certain dichotic test procedures.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID

摘要:

Thirty adult subjects with intracranial lesions (12 brain stem and 18 hemispheric) were tested using Competing Sentences, Staggered Spondaic Words, and Dichotic Digits. In comparing these dichotic tests for their ability to detect abnormal performance for individual subjects, the Digit test appeared most sensitive, followed by the Staggered Spondaic Word test and Competing Sentences. This trend seemed to prevail for subjects with hemispheric and brain stem lesions. All three tests demonstrated greater ipsilateral ear deficits for subjects with brain stem lesions. However, for subjects with hemispheric lesions all tests showed generally poorer scores for the ear contralateral to the lesion. These results, as well as other types of analyses for comparing the three dichotic tests in this study, are discussed.

ISSN:0196-0202    

出版商:OVID    

年代:1983

数据来源: OVID