A right hemispatial field advantage on a verbal free-vision task |
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| Authors: | J Levy L Kueck |
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| Affiliation: | 1. FLENI Psychiatry and Neuroimaging, Buenos Aires, Argentina;2. Department of Mental Health (FLENI Teaching Unit), University of Buenos Aires School of Medicine, Buenos Aires, Argentina;3. Argentine National Council of Scientific and Technological Research (CONICET), Argentina;4. Department of Neurophysiology, University of Buenos Aires School of Psychology, Buenos Aires, Argentina;5. Center for Neuropsychiatry and Behavioral Neurology (CENECON), Hospital de Clínicas “José de San Martín”, Faculty of Medicine, University of Buenos Aires, Buenos Aires, Argentina;6. Department of Psychiatry and Behavioral Sciences, Leonard M. Miller School of Medicine, University of Miami, Coral Gables, FL, United States;7. Department of Physics, University of Buenos Aires School of Science, Buenos Aires, Argentina;8. Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States |
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| Abstract: | Within a fixed time limit for each stimulus item, right handers searched, in a top-to-bottom scan and from right to left for half the subjects and from left to right for the other half, among randomly placed and oriented words for target words that rhymed with a designated sound. A right hemispatial field advantage emerged, as well as an advantage for targets above as compared to below the horizontal meridian. A lateral X vertical location interaction showed a right-side advantage only for targets below the horizontal meridian and an upper target advantage only for targets on the left. Even though the task was presented in free vision, results were highly similar to prior findings with lateralized tachistoscopic presentation of verbal stimuli. |
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