Dissociating early and late error signals in perceptual recognition
| Autor: | Steven E. Petersen, Katerina Velanova, Elisabeth J. Ploran, Steven M. Nelson, Mark E. Wheeler |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Cognitive Neuroscience Speech recognition media_common.quotation_subject Feedback Psychological Decision Making Image processing Stimulus (physiology) Brain mapping Young Adult Perception Modulation (music) medicine Image Processing Computer-Assisted Reaction Time Humans media_common Visual Cortex Communication Analysis of Variance Brain Mapping medicine.diagnostic_test business.industry Cognitive neuroscience of visual object recognition Recognition Psychology Magnetic Resonance Imaging Oxygen Pattern Recognition Visual A priori and a posteriori Female business Functional magnetic resonance imaging Psychology Photic Stimulation |
| Zdroj: | Journal of cognitive neuroscience. 20(12) |
| ISSN: | 0898-929X |
| Popis: | Decisions about object identity follow a period in which evidence is gathered and analyzed. Evidence can consist of both task-relevant external stimuli and internally generated goals and expectations. How the various pieces of information are gathered and filtered into meaningful evidence by the nervous system is largely unknown. Although object recognition is often highly efficient and accurate, errors are common. Errors may be related to faulty evidence gathering arising from early misinterpretations of incoming stimulus information. In addition, errors in task performance are known to elicit late corrective performance monitoring mechanisms that can optimize or otherwise adjust future behavior. In this study, we used functional magnetic resonance imaging (fMRI) in an extended trial paradigm of object recognition to study whether we could identify performance-based signal modulations prior to and following the moment of recognition. The rationale driving the current report is that early modulations in fMRI activity may reflect faulty evidence gathering, whereas late modulations may reflect the presence of performance monitoring mechanisms. We tested this possibility by comparing fMRI activity on correct and error trials in regions of interest (ROIs) that were selected a priori. We found pre- and postrecognition accuracy-dependent modulation in different sets of a priori ROIs, suggesting the presence of dissociable error signals. |
| Databáze: | OpenAIRE |
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