Mental ability,P300, and mismatch negativity: Analysis of frequency and duration discrimination |
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| Authors: | Stefan J. Troche Michael E. Houlihan Robert M. Stelmack Thomas H. Rammsayer |
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| Affiliation: | 1. Department of Psychiatry, University of California San Diego, La Jolla, CA, United States;2. VISN-22 Mental Illness, Research, Education and Clinical Center (MIRECC), VA San Diego Healthcare System, United States;3. Department of Psychiatry, University of Pennsylvania, Philadelphia, PA, United States;4. Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CA, United States;5. VA Greater Los Angeles Healthcare System, Los Angeles, CA, United States;6. Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, United States;7. Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, United States;8. VA Puget Sound Health Care System, Seattle, WA, United States;9. Department of Psychiatry, Harvard Medical School, Boston, MA, United States;10. Massachusetts Mental Health Center Public Psychiatry Division of the Beth Israel Deaconess Medical Center, Boston, MA, United States;11. Department of Psychiatry, The Mount Sinai School of Medicine, New York, NY, United States;12. James J. Peters VA Medical Center, New York, NY, United States;13. Department of Biostatistics, University of California Los Angeles School of Public Health, Los Angeles, CA, United States;14. Center for Behavioral Genomics, and Institute for Genomic Medicine, University of California San Diego, La Jolla, CA, United States;15. Harvard Institute of Psychiatric Epidemiology and Genetics, Boston, MA, United States;1. School of Natural Sciences and Psychology, Liverpool John Moores University, UK;2. School of Psychology, Keele University, UK;3. School of Psychological Sciences, University of Manchester, UK;1. University College London, Institute of Child Health, London, United Kingdom;2. Great Ormond Street Hospital for Children NHS Foundation Trust, Great Ormond Street, London, United Kingdom;3. Division of Neuroscience & Psychological Medicine, Imperial College School of Science, Technology and Medicine, Charing Cross Hospital, London W6 8RP, United Kingdom |
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| Abstract: | Individual differences in mental ability (MA) were examined with event-related potentials (ERP). In addition to using an auditory frequency discrimination task, a duration discrimination task was used to elicit P300 and mismatch negativity (MMN) components of the ERP. Frequency and duration P300 latencies explained 9% and 10% of variance of MAB performance scores independently of each other and commonly 28% of variance. The finding that duration P300 latency explained variance of MA independent of that explained by frequency P300 latency, suggests that temporal information processing is partly dissociable from processing of frequency information in its prediction of MA. Duration and frequency MMNs were shown to be indices of discrimination ability and predicted 11% of variance of MAB performance scores. The outcome of the present study not only emphasizes the importance of both mental speed and discrimination ability for MA but also points to the significance of duration- and frequency-related ERP measures for the understanding of underlying brain mechanisms. |
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