Material-independent and material-specific activation in functional MRI after perceptual learning
Schedule of exposure to similar stimuli contributes to the degree of perceptual learning over and above the amount of exposure in a variety of species and stimuli. In an event-related functional MRI study, investigating schedule and stimulus effects in perceptual learning, we found that intermixed p...
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| Veröffentlicht in: | Neuroreport 2009-10, Vol.20 (16), p.1397-1401 |
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| creator | Mundy, Matthew Edward Honey, Robert C Downing, Paul E Wise, Richard G Graham, Kim S Dwyer, Dominic M |
| description | Schedule of exposure to similar stimuli contributes to the degree of perceptual learning over and above the amount of exposure in a variety of species and stimuli. In an event-related functional MRI study, investigating schedule and stimulus effects in perceptual learning, we found that intermixed presentation (A, B, A, B …) resulted in better subsequent discrimination than blocked presentation (C, C … D, D …) for face and checkerboard stimuli, despite being matched for the number of exposures. Exposure schedule resulted in differential activation in the same early visual regions in both types of stimuli. There was evidence of material-specific activation in the fusiform face area for faces but not for checkerboards, suggesting that material-specific mechanisms are recruited alongside more material-independent mechanisms in perceptual learning. |
| doi_str_mv | 10.1097/WNR.0b013e32832f81f4 |
| format | Article |
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| subjects | Adolescent Adult Anatomical correlates of behavior Behavioral psychophysiology Biological and medical sciences Brain Mapping Discrimination (Psychology) - physiology Female Fundamental and applied biological sciences. Psychology Humans Image Processing, Computer-Assisted - methods Learning - physiology Magnetic Resonance Imaging - methods Male Oxygen - blood Pattern Recognition, Visual - physiology Photic Stimulation - methods Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Reaction Time - physiology Young Adult |
| title | Material-independent and material-specific activation in functional MRI after perceptual learning |
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