Reliability and validity of the dichotic monitoring test for language laterality

Geffen, Gina; Caudrey, David J.

doi:10.1016/0028-3932(81)90071-3

Cited by 95 publications

(32 citation statements)

References 23 publications

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“…These results are in accordance with reports by Geffen and Caudrey 17 , Zatorre 18 , and Hugdahl et al 19 , who compared DLT and the Sodium Amobarbital Test (SAT) and concluded that most of the individuals presented left hemisphere language dominance.…”

Section: Language Hemisphere Dominance: Dlt and Fmrisupporting

confidence: 92%

“…DLT is correlated to fMRI, with a simultaneous increase in the values resulting from both examinations. A number of other studies have already compared DLT with SAT [17][18][19][20][21] , and fMRI with SAT 9,11,13,15,16,22 , showing a positive relationship and confirming the efficiency of the two tests. The relationship between DLT and fMRI, however has been scarcely studied.…”

Section: Language Hemisphere Dominance: Dlt and Fmrimentioning

confidence: 70%

“…The relationship between DLT and fMRI, however has been scarcely studied. we can cite the studies of Fernandes et al 23 and Bethmann et al 17 .…”

Section: Language Hemisphere Dominance: Dlt and Fmrimentioning

confidence: 99%

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Language brain dominance in patients with refractory temporal lobe epilepsy: a comparative study between functional magnetic resonance imaging and dichotic listening test

Fontoura

Branco

Anés

et al. 2008

Arq. Neuro-Psiquiatr.

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-Purpose: To identify brain dominance for language functions with DLT and correlate these results with those obtained from fMRI in patients suffering from intractable temporal lobe epilepsy. Method: This study reports on 13 patients who underwent pre-surgical epileptic evaluation between April and October 2004 at the Epilepsy Surgery Program, Hospital Sao Lucas, PUCRS. In DLT, dominance was assessed through a consonant-vowel task, whereas in fMRI patients performed a verb generation task. Results: Our results identified a correlation between the fMRI lateralization index and the DLT ear predominance index and reply difference index (r=0.6, p=0.02; Pearson Correlation Coefficient), showing positive correlation between results obtained from fMRI and DLT. Conclusion: DLT was found to significantly correlate with fMRI. These findings indicate that DLT (a non-invasive procedure) could be a useful tool to evaluate language brain dominance in pre-surgical epileptic patients as it is cheaper to perform than fMRI.KEy wORDS: dichotic listening test, functional magnetic resonance imaging, refractory temporal lobe epilepsy, brain dominance, language.Determinação de dominância cerebral para linguagem em pacientes com epilepsia refratária de lobo temporal: estudo comparativo entre ressonância magnética funcional e teste de escuta dic�tica teste de escuta dic�tica Resumo -Objetivo: Identificar a dominância cerebral para funções de linguagem através do teste de escuta dicótica (TED) e correlacionar com os resultados de ressonância magnética funcional (RMf) em pacientes com epilepsia refratária de lobo temporal. Método: Foram estudados 13 pacientes com epilepsia refratária de lobo temporal, que realizaram avaliações pré-cirúrgicas no período de abril a outubro de 2004 no Programa de Cirurgia de Epilepsia do Hospital São Lucas da PUCRS. Realizada investigação da dominância hemisférica para linguagem através do TED Consoante-Vogal e da RMf pela geração de verbos. Resultados: Verificou-se a existência de correlação entre os índices de lateralidade (RMf) e os índices de predomínio de orelha e de diferença de resposta (TED) (r=0,6, p=0,02). Conclusão: Existe correlação entre os resultados obtidos através da RMf (índice de lateralidade) e do TED (índice de predomínio de orelha e índice de diferença de resposta) em pacientes com epilepsia refratária de lobo temporal.PALAVRAS-CHAVE: teste de escuta dicótica, ressonância magnética funcional, epilepsia temporal refratária, dominância cerebral, linguagem.

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Section: Language Hemisphere Dominance: Dlt and Fmrisupporting

confidence: 92%

Section: Language Hemisphere Dominance: Dlt and Fmrimentioning

confidence: 70%

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Language brain dominance in patients with refractory temporal lobe epilepsy: a comparative study between functional magnetic resonance imaging and dichotic listening test

Fontoura

Branco

Anés

et al. 2008

Arq. Neuro-Psiquiatr.

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“…The present study sought to avoid these two potential shortcomings through the use of a variation of the dichotic-monitorin9 paradigm [16]. In this response paradigm, participants are instructed to listen for a prespecified target, and for each trial are asked to respond 'yes' or 'no' to the question, 'was the target presented?'…”

Section: The Role Of Rnusical Training and Processing Strategymentioning

confidence: 99%

Laterality effects in the processing of melody and timbre

Boucher

Bryden

1997

Neuropsychologia

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Abstraet--Laterality for the processing of melody and timbre was investigated in 64 right-handed non-musicians. In one block of dichotic-listening trials, participants listened for a prespecified target melody, and in a second block they listened for a prespecified target instrument. Females were more accurate on the left ear in the melody task (whereas males tended to show no ear advantage), but there were no significant ear differences in the timbre task for either sex. This supports the idea of a complementary sex-based pattern of lateralization, with males more strongly lateralized for verbal stimuli and females more strongly lateralized for non-verbal stimuli. No relation was observed between lambda measures for the two tasks, suggesting that laterality for melody processing is independent of laterality for timbre processing. © 1997 Elsevier Science Ltd

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“…is reliable (Geffen & Caudrey, 1981). The details of tape construction may be found in Sexton and Geffen (1981).…”

Section: Resultsmentioning

confidence: 99%

Pure-tone perception and ear advantages in dichotic listening

Geffen

Reynolds

1982

Perception & Psychophysics

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A same-different matching task was used to investigate how subjects perceived a dichotic pair of pure tones. Pairs of stimulus tones in four frequency ranges (center frequencies of 400-1,700 Hz), with separations between 40 and 400 Hz, were tested. Five types of test tones were matched to the stimulus pair: the stimulus pair presented again (control) or crossed over (same tones, different ears), the geometric mean of the two tones, or a binaural tone of the low or high tone of the pair. In the lowest frequency range and the highest with maximum separation, the crossed-over test tones were perceived as different from the same stimulus tones. A bias for perceiving the higher tone of a pair was evident in the frequency ranges with separations of 40-200 Hz. In the lowest frequency range, the bias was for perceiving the higher tone in the right ear. This restricted ear advantage in the perception of pure tones was not significantly related to the right-ear advantage in dichotic word monitoring.A common finding in speech perception research is that the speech signal contains redundant acoustical information. This has been amply demonstrated by the ability of researchers to "paint" their own spectrograms, which bear little resemblance to actual speech spectrograms but carry sufficient information to allow for the perception of speech content (Liberman, Cooper, Shankweiler, & StuddertKennedy, 1967). Several information processing models have implied the existence of filtering mechanisms at the input stages of an information channel (Broadbent, 1971), and it may be hypothesized that some form of filtering takes place in the auditory system to separate complex signals into relevant and irrelevant components.One method of ascertaining what remains of the signal after it has been processed is to present a complex signal followed by a component of the signal and to ask the subject whether the two inputs were the same or different. If the subject says that the inputs were the same, it is likely that the part of the original stimulus not included in the matching stimulus was filtered out, assuming that the subject does not also match what was supposedly filtered out to the original stimulus. This is the method employed in the present study. Only two input stimuli were used (both being pure tones), and determinations were made as to which stimulus dominated the percept. To offset any interactions of the two stimuli along the basilar membrane, stimuli were presented dichotically (i.e., a different stimulus to each ear) and the matching This study was supported by an ARGC grant to Gina Geffen. We are grateful to Kustas Tiivas for software development on the tone perception task. stimuli were presented binaurally (one of the two components of the original stimulus presented to both ears).This method allows for the testing of two possible. types of dominance, ear or stimulus dominance (or some combination of the two). Several studies have examined ear differences in the perception of dichotic pure-tone stimuli. Deutsch (1974Deutsch...

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Reliability and validity of the dichotic monitoring test for language laterality

Cited by 95 publications

References 23 publications

Language brain dominance in patients with refractory temporal lobe epilepsy: a comparative study between functional magnetic resonance imaging and dichotic listening test

Language brain dominance in patients with refractory temporal lobe epilepsy: a comparative study between functional magnetic resonance imaging and dichotic listening test

Laterality effects in the processing of melody and timbre

Pure-tone perception and ear advantages in dichotic listening

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