This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1523/JNEUROSCI.0203-09.2009 in citations.
Please use the identifier: http://hdl.handle.net/2128/20598 in citations.
Cholinergic stimulation enhances neural activity associated with encoding but reduces neural activity associated with retrieval in humans
Cholinergic stimulation enhances neural activity associated with encoding but reduces neural activity associated with retrieval in humans
The cerebral cholinergic system is centrally involved in memory formation. Studies in rodents suggest that cholinergic stimulation may facilitate encoding of new information but may interfere with retrieval. We investigated the effect of cholinergic stimulation on encoding and retrieval of episodic...
Saved in:
Personal Name(s): | Kukolja, J. |
---|---|
Thiel, C.M. / Fink, G. R. | |
Contributing Institute: |
Kognitive Neurowissenschaften; INM-3 |
Published in: | The @journal of neuroscience, 29 (2009) S. 8119 - 8128 |
Imprint: |
Washington, DC
Soc.
2009
|
Physical Description: |
8119 - 8128 |
DOI: |
10.1523/JNEUROSCI.0203-09.2009 |
PubMed ID: |
19553452 |
Document Type: |
Journal Article |
Research Program: |
Funktion und Dysfunktion des Nervensystems |
Series Title: |
Journal of Neuroscience
29 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/20598 in citations.
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520 | |a The cerebral cholinergic system is centrally involved in memory formation. Studies in rodents suggest that cholinergic stimulation may facilitate encoding of new information but may interfere with retrieval. We investigated the effect of cholinergic stimulation on encoding and retrieval of episodic memory in humans. We also tested whether the putative benefit of cholinergic stimulation on memory function depends on individual baseline performance. Since such effects were expected to be greatest in an older population resulting from an age-related degeneration of the cholinergic system, we recruited 22 healthy older subjects (51-68 years) for an event-related functional magnetic resonance imaging experiment. In two separate scanning sessions, subjects encoded and retrieved items and their spatial context under cholinergic stimulation or placebo with the acetylcholine-esterase inhibitor physostigmine or saline being administered intravenously in a double-blind cross-over design. Baseline performance was recorded at a separate occasion without scanning. Cholinergic stimulation enhanced neural activity for successful versus unsuccessful spatial context encoding in the right hippocampus but reduced activity for successful versus unsuccessful spatial context retrieval in the right amygdala. These data may bridge the gap between rodent and human studies by showing that also in man cholinergic stimulation enhances encoding but interferes with retrieval on a neural level. Furthermore, baseline performance negatively correlated with the effect of cholinergic stimulation. Thus, participants who were worse at baseline benefited more from cholinergic stimulation than those who had better baseline values, indicating that a cholinergic deficit contributes to the memory decline even in healthy older subjects. | ||
650 | 2 | |2 MeSH |a Aged | |
650 | 2 | |2 MeSH |a Amygdala: drug effects | |
650 | 2 | |2 MeSH |a Amygdala: physiology | |
650 | 2 | |2 MeSH |a Analysis of Variance | |
650 | 2 | |2 MeSH |a Cholinesterase Inhibitors: administration & dosage | |
650 | 2 | |2 MeSH |a Cholinesterase Inhibitors: pharmacology | |
650 | 2 | |2 MeSH |a Cross-Over Studies | |
650 | 2 | |2 MeSH |a Double-Blind Method | |
650 | 2 | |2 MeSH |a Female | |
650 | 2 | |2 MeSH |a Functional Laterality: drug effects | |
650 | 2 | |2 MeSH |a Hippocampus: drug effects | |
650 | 2 | |2 MeSH |a Hippocampus: physiology | |
650 | 2 | |2 MeSH |a Humans | |
650 | 2 | |2 MeSH |a Injections, Intravenous | |
650 | 2 | |2 MeSH |a Magnetic Resonance Imaging | |
650 | 2 | |2 MeSH |a Male | |
650 | 2 | |2 MeSH |a Memory: drug effects | |
650 | 2 | |2 MeSH |a Middle Aged | |
650 | 2 | |2 MeSH |a Neuropsychological Tests | |
650 | 2 | |2 MeSH |a Physostigmine: administration & dosage | |
650 | 2 | |2 MeSH |a Physostigmine: pharmacology | |
650 | 2 | |2 MeSH |a Psychomotor Performance: drug effects | |
650 | 2 | |2 MeSH |a Reaction Time: drug effects | |
650 | 2 | |2 MeSH |a Space Perception: drug effects | |
650 | 2 | |2 MeSH |a Spatial Behavior: drug effects | |
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500 | |a This work was supported by a grant of the Deutsche Forschungsgemeinschaft (DFG-KFO 112, TP8) to G. R. F. and C. M. T. We thank all our volunteers. We are grateful to our colleagues of the MR and Cognitive Neurology groups for valuable support. We thank Laura Amort and Birte Berger for neuropsychological testing. | ||
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