Lateralization of verbal and affective processes was investigated in P-dyslexic, L-dyslexic and normal children with the aid of a dichotic listening task. The children were asked to detect either the presence of a specific target word or of words spoken in a specific emotional tone of voice. The number of correct responses and reaction time were recorded. For monitoring words, an overall right ...

BACKGROUND When presented with different sounds in each ear (dichotic listening), healthy subjects typically show a preference for stimuli heard in the right ear, an effect termed "right ear advantage". Previous studies examining right ear advantage in schizophrenia have been inconsistent, showing either decreased or increased advantage relative to comparison subjects. Given evidence for enhanc...

Unmedicated depressed outpatients were tested on dichotic syllable and complex tone tests prior to receiving 16 weekly sessions of cognitive therapy (n = 31) or 6-12 weeks of placebo treatment (n = 45). Cognitive-therapy responders had twice the right-ear (left hemisphere) advantage for syllables when compared with nonresponders but did not differ from nonresponders on the nonverbal task. The l...

The authors examined the right ear advantage in a dichotic listening task in healthy aging and very mild and mild stages of Alzheimer's disease. Subjects were simultaneously presented 3 pairs of digits to the left and right ears (e.g., left ear: 4, 3, 1; right ear: 9, 2, 5) for immediate ordered recall. Four lists of triads were presented, varying in presentation rate between digit pairs within...

A subset of schizophrenic patients has demonstrated increased language dysfunction in affectively stressful, compared to non-stressful conditions. Affective reactivity of right-ear advantage has been demonstrated in studies of dichotic listening in schizophrenia. The present study assessed whether participants who showed affective reactivity of speech were also those who showed affective reacti...

Twentv riaht-handed Ss listened to a dichotic tape in which one of six consonant-vowel syllables was paired with a burst of white noise on each trial. Eight blocks of 40 trials were presented. with the syllables within a block presented to the same ear. On each trial. Ss decided if /ba/ was presented. Mean RT to right-ear items was 440.0 msec. while mean left-ear RT was 453.6 msec. Responses in...

In auditory perception, a right hemisphere (RH)/left ear advantage for low-pass filtered stimuli and a left hemisphere (LH)/right ear advantage for high-pass filtered stimuli have been reported. Here we investigated how tonal language experience modulates this hemispheric asymmetry. We recruited Cantonese, Mandarin (tonal languages), and English (non-tonal language) speakers, and asked them to ...