ERPs in Anterior and Posterior Regions Associated With Duration and Size Discriminations

The main objective of the present study was to determine whether event-related potentials (ERPs) predominant in prefrontal cortex (PFC) respond in a similar fashion to ERPs predominant in posterior parietal cortex (PPC) in duration and size discrimination tasks. The results indicate that contingent...

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Bibliographic Details
Published in:Neuropsychology 2009-09, Vol.23 (5), p.668-678
Main Authors: Gontier, Emilie, Paul, Isabelle, Le Dantec, Christophe, Pouthas, Viviane, Jean-Marie, Grouin, Bernard, Christian, Lalonde, Robert, Rebaï, Mohamed
Format: Article
Language:English
Subjects:
Adult
Analysis of Variance
Behavioral psychophysiology
Biological and medical sciences
Brain Mapping
Cognition. Intelligence
Contingent Negative Variation
Contingent Negative Variation - physiology
Discrimination (Psychology) - physiology
Electroencephalography - methods
Electrophysiology
Event-Related Potentials, P300 - physiology
Evoked Potentials
Female
Fundamental and applied biological sciences. Psychology
Human
Humans
Male
Neuropsychological Tests
Parietal Lobe
Perception
Perceptual Discrimination
Photic Stimulation - methods
Prefrontal Cortex
Prefrontal Cortex - anatomy & histology
Prefrontal Cortex - physiology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Size Discrimination
Size Perception - physiology
Spatial perception. Time perception
Stimulus Duration
Time Estimation
Time Factors
Time Perception - physiology
Vision
Young Adult
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Summary:The main objective of the present study was to determine whether event-related potentials (ERPs) predominant in prefrontal cortex (PFC) respond in a similar fashion to ERPs predominant in posterior parietal cortex (PPC) in duration and size discrimination tasks. The results indicate that contingent negative variation (CNV) and P300 components changed according to task demands. In the time-related task, amplitudes and duration of both components increased as a function of stimulus duration and easier discriminability. This was not the case in the size discrimination task. These results are in accordance with the hypothesis of a functional link between PFC and PPC in timing behavior. The later-appearing LPCt component was observed in both tasks, but its amplitude increased only as a function of stimulus duration.
ISSN:0894-4105
1931-1559
DOI:10.1037/a0015757