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The neural correlate of very-long-term picture priming.
- Source :
-
The European journal of neuroscience [Eur J Neurosci] 2005 Feb; Vol. 21 (4), pp. 1101-6. - Publication Year :
- 2005
-
Abstract
- Repetition priming denotes a behavioural change caused by prior exposure to a stimulus. The effect is known to last for weeks. This study addresses the underlying neural mechanisms for very-long-term picture priming by using event-related functional magnetic resonance imaging complemented by a behavioural paradigm. Previous functional imaging studies with shorter retention intervals have shown that priming is associated with changes in the activity of both the occipital and posterior temporal cortex. In this study we compared retention intervals of 1 day and 6 weeks after initial exposure to a picture stimulus. Priming-related decreases in cortical activity in posterior extrastriate and dorsal left inferior frontal areas were found only for the shorter retention interval. In contrast, fMRI activation in the inferior posterior temporal and anterior left inferior frontal cortex was reduced following priming for both retention intervals. In the behavioural paradigm, the priming effect was stable over time. We conclude that the left inferior frontal and inferior posterior temporal cortex play a key role in the very-long-term priming effect.
- Subjects :
- Adult
Brain Mapping
Cerebral Cortex blood supply
Female
Functional Laterality
Humans
Image Processing, Computer-Assisted
Magnetic Resonance Imaging methods
Male
Oxygen blood
Photic Stimulation methods
Reaction Time
Time Factors
Cerebral Cortex physiology
Pattern Recognition, Visual physiology
Reading
Retention, Psychology physiology
Subjects
Details
- Language :
- English
- ISSN :
- 0953-816X
- Volume :
- 21
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- The European journal of neuroscience
- Publication Type :
- Academic Journal
- Accession number :
- 15787715
- Full Text :
- https://doi.org/10.1111/j.1460-9568.2005.03941.x