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Psychology ETDs
Publication Date
9-10-2010
Abstract
This study tested the relationship between short-term neuroplasticity and individual differences in intelligence. Twenty-two participants completed cognitive testing and a visual EEG experiment involving exposures to repeated and novel stimuli. Time-frequency analyses of phase-locked (evoked) and non-phase-locked (induced) power showed a small effect of decreasing evoked/induced theta (4-8 Hz) ratios over stimulus exposures, irrespective of condition. Hypotheses that intelligence would relate to an increase in this ratio over exposures were not supported. However, the magnitude of the ratio positively correlated with intelligence; while the amount of induced gamma (30-50Hz) activation pre- to post-stimulus was highly inversely related to g. Results suggest that transient changes in neural network phase strongly relate to intelligence in physiological measurements acquired over brief intervals.
Degree Name
Psychology
Level of Degree
Doctoral
Department Name
Psychology
First Committee Member (Chair)
Hamilton, Derek
Second Committee Member
Jung, Rex
Third Committee Member
Tesche, Claudia
Fourth Committee Member
Thoma, Robert
Fifth Committee Member
Weisend, Michael
Sponsors
University of New Mexico Department of Psychology Quad-L Fund
Language
English
Keywords
Intellect--Physiological aspects, Neuroplasticity, Theta rhythm, Electroencephalography.
Document Type
Dissertation
Recommended Citation
Euler, Matthew J.. "Individual variation in EEG spectral power enhancement and intelligence." (2010). https://digitalrepository.unm.edu/psy_etds/39