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

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.

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Functional Brain Organization in Bipolar Affective Patients during Manic Phase and after Recovery: A Digit Dichotic Listening Study

Perceptual and Motor Skills ◽

10.2466/pms.1995.80.3c.1275 ◽

1995 ◽

Vol 80 (3_suppl) ◽

pp. 1275-1282 ◽

Cited By ~ 9

Author(s):

G. Kaprinis ◽

J. Nimatoudis ◽

A. Karavatos ◽

D. Kandylis ◽

S. Kaprinis

Keyword(s):

Dichotic Listening ◽

Right Hemisphere ◽

Functional Organization ◽

Normal Subjects ◽

Brain Organization ◽

Ear Advantage ◽

Functional Brain Organization ◽

Right Ear Advantage ◽

The Right ◽

Neuropsychological Findings

To study the functional organization of the cerebral hemispheres in patients with bipolar psychosis using a verbal dichotic listening test for pairs of digits 26 patients were tested twice, during the acute expression of manic phase and after recovery. The patient group during the manic phase did not support the expected right-ear advantage of normal subjects on verbal dichotic tests but showed a statistically significant left-ear advantage, which shifted after recovery toward the typical normal asymmetry. Comparing patients during the manic phase and after recovery showed that the left-ear advantage as well as the shift in right-ear advantage after recovery was due to the reduction of left-ear performance. From the over-all neuropsychological findings for these patients mania may be hypothesized to be characterized by overactivation of the right hemisphere. This phaenomenon seems associated with acuteness of the symptoms of the psychotic disorder.

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Transcranial Static Magnetic Field Stimulation Over the Temporal Cortex Modulating the Right Ear Advantage in Dichotic Listening

Neuromodulation Technology at the Neural Interface ◽

10.1111/ner.13023 ◽

2019 ◽

Vol 23 (3) ◽

pp. 335-340 ◽

Cited By ~ 2

Author(s):

Kai Heimrath ◽

Alexander Spröggel ◽

Stefan Repplinger ◽

Hans‐Jochen Heinze ◽

Tino Zaehle

Keyword(s):

Magnetic Field ◽

Static Magnetic Field ◽

Dichotic Listening ◽

Temporal Cortex ◽

Field Stimulation ◽

Ear Advantage ◽

Right Ear Advantage ◽

The Right

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Dichotic Listening in Children with Serious Language Problems

Perceptual and Motor Skills ◽

10.2466/pms.1989.68.3c.1291 ◽

1989 ◽

Vol 68 (3_suppl) ◽

pp. 1291-1301 ◽

Cited By ~ 4

Author(s):

Ola Bø ◽

Kenneth Hugdahl ◽

Eivor Marklund

Keyword(s):

Dichotic Listening ◽

Finger Tapping ◽

Left Handed ◽

Language Tests ◽

Language Problems ◽

Ear Advantage ◽

Right Ear Advantage ◽

The Right ◽

Language Laterality ◽

Language Variables

20 children with serious language problems (mainly expressive) were tested with the Dichotic Listening (DL) test for language laterality. 16 were right-handed and 4 left-handed. The dichotic test consisted of series of pairwise presentations of CVC-syllables with “target-syllables” that should be detected interspersed among “distractors.” The child pointed to a sheet of paper on which a picture representing the targets (and distractors) was printed. In addition, the children were tested on several expressive and impressive language tests and on finger-tapping. Analysis showed an increased frequency of subjects with a left-ear advantage (LEA) and a reduced amplitude of the right-ear advantage (REA) for those subjects showing a right-ear advantage. Correlations with the language variables and with finger-tapping are presented and discussed.

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Neurophysiological Evaluation of Right-Ear Advantage During Dichotic Listening

Frontiers in Psychology ◽

10.3389/fpsyg.2021.696263 ◽

2021 ◽

Vol 12 ◽

Author(s):

Keita Tanaka ◽

Bernhard Ross ◽

Shinya Kuriki ◽

Tsuneo Harashima ◽

Chie Obuchi ◽

...

Keyword(s):

Steady State ◽

Auditory Cortex ◽

Dichotic Listening ◽

Steady State Response ◽

State Response ◽

Auditory Steady State Response ◽

Left And Right ◽

Ear Advantage ◽

Right Ear Advantage ◽

The Right

Right-ear advantage refers to the observation that when two different speech stimuli are simultaneously presented to both ears, listeners report stimuli more correctly from the right ear than the left. It is assumed to result from prominent projection along the auditory pathways to the contralateral hemisphere and the dominance of the left auditory cortex for the perception of speech elements. Our study aimed to investigate the role of attention in the right-ear advantage. We recorded magnetoencephalography data while participants listened to pairs of Japanese two-syllable words (namely, “/ta/ /ko/” or “/i/ /ka/”). The amplitudes of the stimuli were modulated at 35 Hz in one ear and 45 Hz in the other. Such frequency-tagging allowed the selective quantification of left and right auditory cortex responses to left and right ear stimuli. Behavioral tests confirmed the right-ear advantage, with higher accuracy for stimuli presented to the right ear than to the left. The amplitude of the auditory steady-state response was larger when attending to the stimuli compared to passive listening. We detected a correlation between the attention-related increase in the amplitude of the auditory steady-state response and the laterality index of behavioral accuracy. The right-ear advantage in the free-response dichotic listening was also found in neural activities in the left auditory cortex, suggesting that it was related to the allocation of attention to both ears.

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