Journal
JOURNAL OF NEUROSCIENCE
Volume 30, Issue 25, Pages 8445-8456Publisher
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.4719-09.2010
Keywords
-
Categories
Funding
- J.S. McDonnell Foundation
- National Institute of Mental Health [R01 MH-71920-06]
Ask authors/readers for more resources
Posterior parietal cortex has been traditionally associated with perceptual attention and sensory-motor processing, but recent studies also indicate a potential role in episodic memory retrieval. Here, we developed a new paradigm to isolate top-down attention-related activity directed to either memory or perceptual information. We demonstrated a robust topographic separation in human posterior parietal cortex associated with searching for task-relevant information in episodic memory or in the environment. Control analyses confirmed that this difference was not dependent on differences in sensory stimulation or eye movements across tasks. Notably, we observed in memory-and perception-related regions a mechanism of reciprocal dynamic competition that was related to behavioral performance. These results provide the first evidence for a double dissociation between parietal networks involved in top-down attention to memory and the environment and support the idea of neural competition between perception and memory.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available