The hypothesis that memory is stored through a single stage of consolidation that results in a stable and lasting long-term memory has been challenged by the proposition that reactivation of a memory induces reconsolidation of the memory. The reconsolidation hypothesis is supported by evidence that, under some conditions, post-retrieval treatments affecting amygdala and hippocampus functioning impair subsequent retention performance. We now report that repeated retention testing attenuates the performance impairment induced by post-retrieval reversible inactivation of the amygdala and hippocampus of rats induced by tetrodotoxin. These findings challenge the reconsolidation hypothesis and suggest that the post-retrieval retention performance impairment is best explained as due to temporary retrieval failure.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.nlm.2006.01.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Your Brain's "Save" Button: The Amygdala.
Front Young Minds
January 2024
Immersive Neuromodulation and Neuroimaging Laboratory, Department of Psychology, University of Utah, Salt Lake City, UT, USA.
Do you ever wonder why you remember some experiences better than others? Why you remember that funny joke your friend told at lunch a few months ago or the scary snake you saw in your backyard, but not that time you went to the post office with your parents? Just like a computer has a save button, our brains do, too! When something scary, exciting, or strange happens, a small part of the brain, the amygdala, helps us click save on that event so we can remember it later. Decades of research have helped scientists understand what parts of the brain are important for memory and how the amygdala works with other brain regions to tag experiences as worth remembering. This research is important for understanding how memories are formed and can help us create new therapies for people with memory problems, who have trouble forming new memories and remembering past experiences.
View Article and Find Full Text PDFThe neural basis of the insight memory advantage.
Trends Cogn Sci
January 2025
Department of Psychology, Humboldt University Berlin, Berlin, Germany; Center for Cognitive Neuroscience, Duke University, Durham, NC 27708, USA.
Creative problem solving and memory are inherently intertwined: memory accesses existing knowledge while creativity enhances it. Recent studies show that insights often accompanying creative solutions enhance long-term memory. This insight memory advantage (IMA) is explained by the 'insight as prediction error (PE)' hypothesis which states that insights arise from PEs updating predictive solution models and thereby enhancing memory.
View Article and Find Full Text PDFIndividualized gray matter morphological abnormalities unveil two neuroanatomical obsessive-compulsive disorder subtypes.
Transl Psychiatry
January 2025
Department of Magnetic Resonance Imaging, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
Obsessive-compulsive disorder (OCD) is a highly heterogeneous disorder, with notable variations among cases in structural brain abnormalities. To address this heterogeneity, our study aimed to delineate OCD subtypes based on individualized gray matter morphological differences. We recruited 100 untreated, first-episode OCD patients and 106 healthy controls for structural imaging scans.
View Article and Find Full Text PDFAltered brain glucose metabolism in COVID-19 disease: an activation likelihood estimation meta-analysis of PET studies.
Brain Imaging Behav
January 2025
School of Medicine, Pusan National University, Yangsan, Republic of Korea.
COVID-19 disease, caused by the SARS-CoV-2 virus, has significantly altered modern society and lifestyles. We investigated its impact on brain glucose metabolism by meta-analyzing existing studies that utilized 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) scans of the brain. We conducted a systematic search of MEDLINE and EMBASE databases from inception to August 2024 for English-language publications using the keywords "positron emission tomography", and "COVID-19".
View Article and Find Full Text PDFRepeated Amphetamine Exposure Blunted Angiotensin II-Induced Responses Mediated by AT Receptors.
Discov Med
January 2025
Department of Pharmacology "Otto Orsingher", Institute of Experimental Pharmacology of Córdoba (IFEC-CONICET), Faculty of Chemical Sciences, National University of Córdoba, X5000 Córdoba, Argentina.
Background: Angiotensin II, is critical in regulating the sympathetic and neuroendocrine systems through angiotensin II type 1 receptors (AT-R). Angiotensin II intracerebral administration increases water and sodium intake, as well as renal sodium excretion. Previously, our group has shown that AT-R is involved in behavioral and neurochemical sensitization induced by amphetamine.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!