Related Experiment Video
Updated: Apr 5, 2026

14:27
Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording
Published on: August 11, 2019
13.6K
Distinguishing adaptive plasticity from vulnerability in the aging hippocampus.
1Evelyn F. McKnight Brain Institute, University of Arizona, Tucson, AZ, United States; ARL Division of Neural Systems, Memory and Aging, University of Arizona, Tucson, AZ, United States.
Neuroscience
|August 11, 2015
Summary
Some brain aging changes in the hippocampus may be adaptive, not deficits. Understanding this neural plasticity offers new insights into successful brain aging.
Area of Science:
- Neuroscience
- Aging Research
- Cognitive Function
Background:
- Hippocampal circuits are well-studied in mammalian brain aging.
- Age-related neural circuit changes are often viewed as vulnerabilities contributing to cognitive decline.
Purpose of the Study:
- To explore the overlooked possibility that some age-related neural changes are adaptive responses.
- To re-evaluate brain aging by considering plasticity that enhances network function.
Main Methods:
- Utilizing the hippocampus as a model neural circuit.
- Analyzing age-related alterations in neural circuits.
Main Results:
- Some age-related changes in the hippocampus may result from neural plasticity that enhances network function.
- This challenges the view of all age-related changes as solely detrimental.
Conclusions:
- Differentiating adaptive changes from vulnerabilities is crucial for understanding brain aging.
- An adaptive perspective may unlock deeper insights into successful brain aging.
More Related Videos
Related Concept Videos
Neuroplasticity
2.5K
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
2.5K
Role of Hippocampus in Memory
2.0K
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
2.0K
Cognitive Development During Adulthood
1.2K
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
1.2K
Long-term Depression
3.6K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
3.6K
Long-term Depression
33.8K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
33.8K
Aging
1.0K
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
1.0K

