Abstract
Laterality investigators have typically interpreted any perceptual asymmetry as a direct expression of the functional organization of the brain. However, many other confounding factors, including the asymmetric distribution of attention, may also contribute to either the magnitude or the direction of any of these advantages. In two experiments, attention was manipulated in a dichotic listening paradigm by presenting a preexposural tone cue to the ear from which the subject was required to report. The time available to orient attention was manipulated by varying the time period between the onset of the cue and the onset of the trial (stimulus onset asynchrony, or SOA).Results indicated that a right ear advantage for the identification of verbal material obtained at a 150-msec SOA was almost completely eliminated at an SOA of 450 msec. In addition, the direction of the ear advantage for emotion identification was found to depend on task difficulty. A left ear advantage, apparent when task difficulty was minimal, was reversed to a right ear advantage when difficulty was increased. These data are taken as evidence that, when subjects are faced with a difficult dichotic task, there is a general tendency for right-handed subjects to bias their attention toward the right ear. Such a tendency is shown not only to have likely seriously compromised the results of past investigations of functional perceptual asymmetries but also to be inconsistent with previously proposed theories of dichotic listening performance.
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Bloch, M., &Heluge, J. (1989). Stimulus intensity, attentional instructions, and the ear advantage during dichotic listening.Brain & Cognition.9, 136–148.
Bryden, M. P. (1978). Strategy effects in the assessment of hemispheric asymmetry. In G. Underwood (Ed.),Strategies of information processing (pp. 117–149). London: Academic Press.
Bryden, M. P. (1982).Laterality: Functional asymmetry in the intact brain. London: Academic Press.
Bryden, M. P. (1988). An overview of the dichotic listening procedure and its relation to cerebral organization. In K. Hugdahl (Ed.),Handbook of dichotic listening (pp. 1–45). Toronto: Wiley.
Bryden, M. P., Free, T., Gagné, S., &Groff, P. (1991). Handedness effects in the detection of dichotically-presented words and emotions.Cortex,27, 229–235.
Bryden, M. P., Hécaen, H., &Deagostini, M. (1983). Patterns of cerebral organization.Brain and Language,20, 249–262.
Bryden, M. P., &Macrae, L. (1988). Dichotic laterality effects obtained with emotional words.Neuropsychiatry, Neuropsychology, and Behavioural Neurology,1, 171–176.
Bryden, M. P., Munhall, K., &Allard, F. (1983). Attentional biases andthe right-eareffect in dichotic listening.Brain & Language,18, 236–248.
Bryden, M. P., &Murray, J. (1985). Toward a model of dichotic listening performance.Brain & Cognition,4, 241–257.
Bryden, M. P., &Sprott, D. A. (1981). Statistical determination of degree of laterality.Neuropsychologia,19, 571–581.
Dean, R., &Hua, M. (1982). Laterality effects in cued auditory asymmetries.Neuropsychologia,20, 685–690.
Goodglass, H. (1967). Binaural digit presentation and early lateralized brain damage.Cortex.2, 295–306.
Hiscock, M., &Stewart, C. (1984). The effect of asymmetrically focused attention upon subsequent ear differences in dichotic listening.Neuropsychologia,22, 337–351.
Hugdahl, K., &Andersson, L. (1986). The “forced-attention paradigm” in dichotic listening to CV syllables: A comparison between adults and children.Cortex,22, 417–432.
Kallman, H. J. (1978). Can expectancy explain reaction time ear asymmetries.Neuropsychologia,19, 571–581.
Kimura, D. (1961a). Cerebral dominance and the perception of verbal stimuli.Canadian Journal of Psychology,15, 166–171.
Kimura, D. (1961b). Some effects of temporal lobe damage on auditory perception.Canadian Journal of Psychology,15, 156- 165.
Kinsbourne, M. (1975). The mechanism of hemispheric control over the lateral gradient of attention. In P. M. A. Rabbitt & S. Dornic (Eds.),Attention and Performance V (pp. 81–97). London: Academic Press.
Ley, R. G., &Bryden, M. P. (1982). A dissociation of right and left hemispheric effects for recognizing emotional tone and verbal content.Brain & Cognition,1, 3–9.
Mondor, T. A., &Bryden, M. P. (1991). The influence of attention on the dichotic REA.Neuropsychologia,29, 1179–1190.
Mondor, T. A., &Bryden, M. P. (1992a). On the relation between visual spatial attention and visual field asymmetries.Quarterly Journal of Experimental Psychology: Human Perception & Performance,44A, 529–555.
Mondor, T. A., &Bryden, M. P. (1992b). Orienting of auditory spatial attention: Effects of a lateralized tone cue.Neuropsychologia,29, 1179–1190.
MÜller, H. J., &Rabbitt, P. M. (1989). Reflexive and voluntary orienting of visual attention: Time course of activation and resistance to interruption.Journal of Experimental Psychology: Human. Perception & Performance,15, 315–330.
Obrzut, J., Conrad, P., Bryden, M. P., &Boliek, C. (1988). Cued dichotic listening with right-handed, left-handed, bilingual and learning-disabled children.Neuropsychologia,26, 119–131.
Repp, B. (1976). Identification of dichotic fusions.Journal of the Acoustical Society of America,60, 456–469.
Sidtis, J. J. (1982). Predicting brain organization from dichotic listening performance: Cortical and sub-cortical functional asymmetries contribute to perceptual asymmetries.Brain & Language,17, 287–300.
Sidtis, J. J. (1984). Brain asymmetries large and small.Brain & Language,21, 354–357.
Sidtis, J. J. (1988). Dichotic listening alter commissurotomy. In K. Hugdahl (Ed.),Handbook of dichotic listening (pp. 161–184). Toronto: Wiley.
Springer, S. P., &Deutsch, G. (1989).Left brain, right brain. New York: W. H. Freeman.
Wexler, B., &Halwes, T. (1981). Right ear bias in the perception of loudness of pure tones.Neuropsychologia,19, 147–150.
Wexler, B., &Halwes, T. (1983). Increasing the power of dichotic methods: The fused rhymed words tests.Neuropsychologia,21, 59–66.
Yantis, S., &Jonides, J. (1990). Abrupt visual onsets and selective attention: Voluntary versus automatic allocation.Journal of Experimental Psychology: Human Perception & Performance,16, 121–134.
Zatorre, R. (1989). Perceptual asymmetry on the dichotic fused words test and cerebral speech lateralization determined by the carotid amytal test.Neuropsychologia,27, 1207–1219.
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This research was supported by a Natural Sciences and Engineering Research Council grant to M. P. Bryden.
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Mondor, T.A., Bryden, M.P. On the relation between auditory spatial attention and auditory perceptual asymmetries. Perception & Psychophysics 52, 393–402 (1992). https://doi.org/10.3758/BF03206699
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DOI: https://doi.org/10.3758/BF03206699