Hemispheric specialization for voice recognition: Evidence from dichotic listening

1988 ◽  
Vol 34 (2) ◽  
pp. 246-252 ◽  
Author(s):  
Jody Kreiman ◽  
Diana Van Lancker
Keyword(s):  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Voice Recognition

Literacy and Hemispheric Specialization for Language: Dichotic Listening in Young Functionally Illiterate Men

1993 ◽  
Vol 77 (1) ◽  
pp. 195-199 ◽  
Author(s):  
A. Tzavaras ◽  
C. Phocas ◽  
G. Kaprinis ◽  
A. Karavatos
Keyword(s):  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Young Men ◽  
Ear Advantage ◽  
Right Ear Advantage

The functional cerebral organization of young men who were defined as illiterate was studied by testing their dichotic listening for language stimuli. These functionally illiterate men showed greater right ear advantage for language stimuli than 50 educated subjects, a pattern already observed with completely illiterate persons of both sexes. This finding is consistent with the view that mastering written codes for language might be one of the most relevant parameters in hemispheric specialization when language is studied.

Effects of Ethyl Alcohol on Hemispheric Specialization of Language and on Hand Movements

1993 ◽  
Vol 77 (3_suppl) ◽  
pp. 1259-1264 ◽  
Author(s):  
Andrea Clarici ◽  
Franco Fabbro ◽  
Antonio Bava
Keyword(s):  
Ethyl Alcohol ◽  
Dual Task ◽  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Statistical Evidence ◽  
Hand Movements ◽  
Moderate Dose ◽  
Listening Test ◽  
Linguistic Functions

Hemispheric specialization for linguistic functions was assessed by means of a dual-task (verbal-manual) paradigm and a dichotic listening test in 16 right-handed men after the administration of a moderate dose of ethyl alcohol. No statistical evidence supporting the hypothesis that moderate doses of alcohol affect motor or perceptive aspects of hemispheric specialization was found.

scholarly journals EQUIVALENCE OF WORD TEST AND CONSONANT-VOWEL SYLLABLES TEST OF DICHOTIC LISTENING

2020 ◽  
pp. 168-186
Author(s):  
Tamara S. Muromtseva ◽  
Mariya S. Kovyazina
Keyword(s):  
Working Memory ◽  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Russian Language ◽  
Word Test ◽  
Listening Tests ◽  
Functional Orientation ◽  
Phonetic Features ◽  
Listening Task ◽  
Right Ear Advantage

Relevance. Development and improvement of methodological tools to solve scientific and practical problems is an important issue in modern neuropsychology. This study examines consonant-vowel (СV) syllable test and word test, considers their different functional orientation and shows relevance of the dichotic listening task development. For the first time in Russian neuropsychology the authors developed the dichotic listening consonant-vowel syllables test taking into account the phonetic features of the Russian language. Objective. Comparison of the equivalence of two dichotic listening tests: the word test that was first tested by B. S. Kotik and the two CV-syllable dichotic listening tests. Method. Two groups of respondents participated in the study. The first group of the participants (N = 88; M = 21.08; SD = 2.32) performed the word test and the first CV-syllable test. Participants of the second group (N = 44; M = 24.52; SD = 1.86) were presented with the word test and the second version of CV-syllable dichotic listening test. Results. The results confirmed the differences between the word test and the two CV-syllable dichotic listening tests. The differences and nonequivalence of the word test and the CV-syllable tests in laterality index (LI) and productivity coefficients (general productivity, right- and left-ear accuracy scores) are amplified as the stimulus material of CV-syllable dichotic listening is improved and modified. The increase of the load on working memory enhances right ear advantage (LI) and reduces performance with an increase in the influence of working memory on the results of dichotic listening. Conclusion. The study shows nonequivalence of the word test and the CV-syllable tests and their different functional orientation for the estimation of hemispheric specialization in audio-verbal domain.

Metodika dichotickej stimulácie v neuropsychologickej diagnostike

TESTFÓRUM ◽  
2016 ◽  
Vol 5 (7) ◽  
pp. 14-19
Author(s):  
Marián Špajdel ◽  
Katarína Jariabková
Keyword(s):  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Strong Relationship ◽  
Auditory Stimuli ◽  
Neurologically Impaired ◽  
Environmental Sounds ◽  
Verbal Stimuli ◽  
Cerebral Dysfunction ◽  
Neurologically Impaired Patients ◽  
Test Retest Reliability

Dichotická stimulácia sa popri výskume funkčnej asymetrie hemisfér využíva predovšetkým v neuropsychologickej diagnostike. Pri dichotickej stimulácii vyšetrovaná osoba počúva naraz dva odlišné podnety, pričom jeden sa podáva do pravého ucha a druhý do ľavého ucha. Profil laterálnych rozdielov a celkových výkonov v reprodukcii počutých podnetov môže reflektovať mozgové dysfunkcie rozličnej etiológie. V rámci neuropsychologickej diagnostiky možno metodiku využiť pri sledovaní sluchovej diskriminácie a percepcie rečových podnetov, environmentálnych zvukov a sekvencií tónov a ich lateralizácie, pri diagnostike pozornostných a pamäťových procesov a taktiež  pri sledovaní úspešnosti neuropsychologickej rehabilitácie.  Príspevok opisuje nami vytvorenú metodiku dichotickej stimulácie s neverbálnymi a verbálnymi podnetmi (Špajdel, Jariabková, 2008), ktorá obsahuje štyri druhy podnetov: sekvencie tónov, environmentálne zvuky, slabiky, slová. Overovanie metodiky u bežnej populácie ukázalo dobrú test-retestovú reliabilitu. Výkony v dichotickej stimulácii signifikantne korelovali s mozgovou aktivitou meranou prostredníctvom evokovaných potenciálov. Na hodnotenie výkonov môžu slúžiť percentilové normy vytvorené na základe výsledkov 73 pravoručných osôb z bežnej  populácie.The dichotic listening paradigm, in which two different auditory stimuli are presented at the same time − one to each ear, has been widely used to study the nature of hemispheric specialization. Nevertheless, dichotic listening seems to be useful in demonstrating cerebral dysfunction in neurologically impaired patients. Dichotic listening does not tap exclusively the temporal lobe function but other cortical and subcortical areas are also involved what is reflected on specific dichotic listening performance. Our dichotic listening method (Špajdel, Jariabková, 2008) using nonverbal stimuli (environmental sounds, two-tone sequences) as well as verbal stimuli (CV syllables, CVC nouns) is decribed. Test-retest reliability was high for all four tasks administered. We found, that dichotic listening performance is in strong relationship with brain electric  acitivy measured by evoked potentials. Percentile norms based on the performance of 73 right-handed subjects aged 18 – 30 years are ready to use.

Dichotic Listening to Melodic Patterns and Its Relationship to Hemispheric Specialization of Function

1985 ◽  
Vol 3 (2) ◽  
pp. 127-154 ◽  
Author(s):  
Diana Deutsch
Keyword(s):  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Complex Signal ◽  
Task Requirement ◽  
Single Complex ◽  
Level Of Difficulty ◽  
Ear Advantage ◽  
The Right

Ear advantages in dichotic listening are generally held to reflect greater involvement of the hemisphere contralateral to the preferred ear. Rationales for this view rely on the assumption that, when information arriving at the two ears is treated as a single complex signal, an advantage to a component of this signal based on ear of input will not interact with an advantage based on some other attribute, such as frequency. This assumption is shown, for the case of dichotically presented melodies, to be unjustified. Dichotic tone pairs that are presented in a sequential context are more accurately perceived and localized when the higher tone is to the right and the lower to the left, than when the higher tone is to the left and the lower to the right. This anisotropy can, in principle, give rise to patterns of ear advantage which may tend in either direction, depending on factors such as type of material presented, level of difficulty, task requirement, and category of listener. Since its basis is unknown, ear advantages resulting from this anisotropy cannot be assumed to reflect greater involvement of either hemisphere in processing the information.

Hemispheric Asymmetries in Children

1982 ◽  
Vol 54 (3) ◽  
pp. 1011-1019 ◽  
Author(s):  
Lawrence Lewandowski
Keyword(s):  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
Age Groups ◽  
Hemispheric Asymmetries ◽  
Perceptual Asymmetries ◽  
Auditory Tasks

A sample of 48 boys was divided into four separate age groups and then presented with a variety of hemispheric specialization tasks. Asymmetries were demonstrated on manual, visual, and auditory tasks, however, the degree of these asymmetries did not change across age groups. The findings suggest that hemispheric specialization as measured by dichotic listening and visual half-field tasks is not likely to change significantly with increased age. In addition, there appears to be a dissociation between visual and auditory perceptual asymmetries.

Investigations of hemispheric specialization of self-voice recognition

2008 ◽  
Vol 68 (2) ◽  
pp. 204-214 ◽  
Author(s):  
Christine Rosa ◽  
Maryse Lassonde ◽  
Claudine Pinard ◽  
Julian Paul Keenan ◽  
Pascal Belin
Keyword(s):  
Hemispheric Specialization ◽  
Voice Recognition

Brain Laterality — Beyond the Basics

1996 ◽  
Vol 1 (3) ◽  
pp. 206-220 ◽  
Author(s):  
Kenneth Hugdahl
Keyword(s):  
Dichotic Listening ◽  
Hemispheric Specialization ◽  
General Psychology ◽  
Functional Versus ◽  
Subcortical Structures ◽  
Field Techniques ◽  
Brain Laterality ◽  
Hemispheric Activation ◽  
And Function ◽  
The Brain

In the present paper, I selectively review a series of studies conducted in our laboratory over the last decade related to brain laterality, both experimentally and clinically. The studies reviewed have for most part utilized the dichotic listening and visual half-field techniques for lateralizing stimulus presentations. Three major conceptual distinctions in brain laterality are discussed in the paper: hemispheric specialization versus hemispheric activation, functional versus structural laterality, and hardwired versus dynamic modulatory laterality. A fourth distinction is between cognitive and physiological laterality. It is argued in the paper that left-right asymmetrical function is not only related to perceptual/cognitive functions subserved by the cortical hemispheres, but also involves subcortical structures and peripheral physiology, including the autonomic and endocrine systems. Thus, although research on laterality has been in the mainstream of general psychology and neuropsychology for the last 30-50 years, we have still probably only uncovered the tip of the iceberg with respect to the psychological processes and systems that are related to the asymmetrical structure and function of the brain.

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