scholarly journals Lateralization of Auditory Processing of Silbo Gomero

Symmetry ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1183
Author(s):  
Pamela Villar González ◽  
Onur Güntürkün ◽  
Sebastian Ocklenburg
Keyword(s):  
Language Processing ◽  
Auditory Processing ◽  
Dichotic Listening ◽  
Relative Increase ◽  
Control Group ◽  
Language Lateralization ◽  
Ear Advantage ◽  
Listening Task ◽  
Right Ear Advantage ◽  
The Right

Left-hemispheric language dominance is a well-known characteristic of the human language system. However, it has been shown that leftward language lateralization decreases dramatically when people communicate using whistles. Whistled languages present a transformation of a spoken language into whistles, facilitating communication over great distances. In order to investigate the laterality of Silbo Gomero, a form of whistled Spanish, we used a vocal and a whistled dichotic listening task in a sample of 75 healthy Spanish speakers. Both individuals that were able to whistle and to understand Silbo Gomero and a non-whistling control group showed a clear right-ear advantage for vocal dichotic listening. For whistled dichotic listening, the control group did not show any hemispheric asymmetries. In contrast, the whistlers’ group showed a right-ear advantage for whistled stimuli. This right-ear advantage was, however, smaller compared to the right-ear advantage found for vocal dichotic listening. In line with a previous study on language lateralization of whistled Turkish, these findings suggest that whistled language processing is associated with a decrease in left and a relative increase in right hemispheric processing. This shows that bihemispheric processing of whistled language stimuli occurs independent of language.

Enhanced Identification of Long Versus Short Voice Onset Time Consonant–Vowel Syllables in a Dichotic Listening Task

2017 ◽  
Vol 26 (4) ◽  
pp. 555-561 ◽  
Author(s):  
Deborah Moncrieff ◽  
Lauren Dubyne
Keyword(s):  
Dichotic Listening ◽  
English Language ◽  
Voice Onset Time ◽  
Onset Time ◽  
Language Version ◽  
Percent Correct ◽  
Ear Advantage ◽  
Listening Task ◽  
Right Ear Advantage ◽  
The Right

Purpose This study investigated the influence of voice onset time (VOT) on the perception of consonant–vowel (CV) signals during a dichotic listening (DL) task. Method Sixty-two young adults with normal hearing were tested with the English language version of the Hugdahl Dichotic CV (DCV) Test. They were asked to identify 1 CV syllable during 3 DL conditions: free recall (report the syllable heard most clearly), forced right (report the syllable in the right ear), and forced left (report the syllable in the left ear). Averages for number and percent correct syllables were recorded under each condition and across the entire test. Results All subjects demonstrated an overall right-ear advantage (REA) when scores from all 3 listening conditions were averaged. The REA occurred for all VOT pairings except when the long VOT was presented to the left ear, whereas the short VOT was presented to the right ear when subjects produced an average left-ear advantage. The left-ear advantage overcame the structural advantage of the right ear even when subjects were directed to attend to the right ear. This result was consistent with findings of earlier studies done with Norwegian and Australian subjects. Conclusions Listeners' REA may be overcome by interaural temporal differences that favor processing in the listener's nondominant ear during the DCV test. Balanced VOT conditions across the DCV test prevent this effect from producing an overall bias toward the left ear, but clinical DL tests with consonant–vowel–consonant words should be examined for effects of the long VOT on laterality of performance.

The effect of stimulus intensity on the right ear advantage in dichotic listening

2008 ◽  
Vol 431 (1) ◽  
pp. 90-94 ◽  
Author(s):  
Kenneth Hugdahl ◽  
René Westerhausen ◽  
Kimmo Alho ◽  
Svyatoslav Medvedev ◽  
Heikki Hämäläinen
Keyword(s):  
Stimulus Intensity ◽  
Dichotic Listening ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
The Right

The Effect of Memory Load on the Right Ear Advantage in Dichotic Listening

1973 ◽  
Vol 53 (1) ◽  
pp. 368-369 ◽  
Author(s):  
Grace Yeni‐Komshian ◽  
Joel Gordon ◽  
Paul Sherman
Keyword(s):  
Dichotic Listening ◽  
Memory Load ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
The Right

Dichotic Listening: Elimination of the Right Ear Advantage Under a Dual Task Procedure

1997 ◽  
Vol 4 (3) ◽  
pp. 171-175 ◽  
Author(s):  
Marien Gadea ◽  
Raul Espert ◽  
Javier Chirivella
Keyword(s):  
Dual Task ◽  
Dichotic Listening ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
The Right

scholarly journals A large-scale estimate on the relationship between language and motor lateralization

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Julian Packheiser ◽  
Judith Schmitz ◽  
Larissa Arning ◽  
Christian Beste ◽  
Onur Güntürkün ◽  
...  
Keyword(s):  
Language Processing ◽  
Dichotic Listening ◽  
Large Scale ◽  
Accurate Estimate ◽  
Language Lateralization ◽  
Left Handed ◽  
Right Ear Advantage ◽  
Motor Asymmetries ◽  
Continuous Measures ◽  
Scale Estimate

AbstractHuman language is dominantly processed in the left cerebral hemisphere in most of the population. While several studies have suggested that there are higher rates of atypical right-hemispheric language lateralization in left-/mixed-handers, an accurate estimate of this association from a large sample is still missing. In this study, we comprised data from 1,554 individuals sampled in three previous studies in which language lateralization measured via dichotic listening, handedness and footedness were assessed. Overall, we found a right ear advantage indicating typical left-hemispheric language lateralization in 82.1% of the participants. While we found significantly more left-handed individuals with atypical language lateralization on the categorical level, we only detected a very weak positive correlation between dichotic listening lateralization quotients (LQs) and handedness LQs using continuous measures. Here, only 0.4% of the variance in language lateralization were explained by handedness. We complemented these analyses with Bayesian statistics and found no evidence in favor of the hypothesis that language lateralization and handedness are related. Footedness LQs were not correlated with dichotic listening LQs, but individuals with atypical language lateralization also exhibited higher rates of atypical footedness on the categorical level. We also found differences in the extent of language lateralization between males and females with males exhibiting higher dichotic listening LQs indicating more left-hemispheric language processing. Overall, these findings indicate that the direct associations between language lateralization and motor asymmetries are much weaker than previously assumed with Bayesian correlation analyses even suggesting that they do not exist at all. Furthermore, sex differences seem to be present in language lateralization when the power of the study is adequate suggesting that endocrinological processes might influence this phenotype.

Asymmetrical Processing of Dichotic Inputs in Undergraduates across Sex, Handedness, Ear-Side, and Experimental Instructions

1989 ◽  
Vol 68 (3) ◽  
pp. 1003-1010 ◽  
Author(s):  
James F. Iaccino ◽  
Stephen J. Sowa
Keyword(s):  
Dichotic Listening ◽  
Hand Dominance ◽  
Left Handed ◽  
Linguistic Functions ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
The Right

Past studies have shown that some female as well as left-handed students do not demonstrate a right-ear advantage (REA) for verbal materials, suggesting that linguistic functions may not be handled in one hemisphere exclusively. To examine these laterality effects more closely, 96 undergraduates were equally divided by sex and hand dominance. Moreover, experimental instructions as to which ear to focus on were provided in a dichotic listening procedure, with left-ear attendance alternating with right-ear across four counterbalanced blocks of 60 trials each. Analysis indicated a major interaction of sex × ear × instructions, with men showing a right-ear advantage when attending to that respective side, highlighting the importance of experimental demands on dichotic performance. The right-ear advantage in right-handed persons was uninfluenced by these instructions, suggesting more pronounced asymmetries in this group.

Patients with Posttraumatic Stress Disorder Show Decreased Cognitive Control: Evidence from Dichotic Listening

2011 ◽  
Vol 17 (2) ◽  
pp. 344-353 ◽  
Author(s):  
Grethe E. Johnsen ◽  
Pushpa Kanagaratnam ◽  
Arve E. Asbjørnsen
Keyword(s):  
Posttraumatic Stress Disorder ◽  
Cognitive Control ◽  
Posttraumatic Stress ◽  
Dichotic Listening ◽  
Stress Disorder ◽  
Control Group ◽  
Control Functions ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
Ptsd Group

AbstractThe influence of posttraumatic stress disorder (PTSD) on cognitive control and auditory attention modulation was examined with the use of a dichotic-listening (DL) task. The participants were 45 war-exposed refugees. The PTSD group comprised 22 participants meeting the DSM-IV criteria for PTSD, and the Control group comprised 23 war-exposed participants without PTSD. Both groups were tested with a consonant–vowel syllables DL task under three different attentional instructions. The two groups did not differ in the non-forced and forced-right conditions and showed, as expected, right-ear advantages. The Control group showed, as expected, a left-ear advantage in the forced-left (FL) condition. However, the PTSD group continued to show a right-ear advantage - and only minor modulation of the performance during the FL condition. This finding suggests that PTSD is associated with a reduced capacity for top-down attentional control of a bottom-up or stimulus-driven effect. The result shows that participants with PTSD have impaired cognitive control functions when tested on information processing of neutral stimuli. (JINS, 2011, 17, 344–353)

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