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Related Concept Videos

Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

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...
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Related Experiment Video

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Assessing Human Spatial Navigation in a Virtual Space and its Sensitivity to Exercise
06:17

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Published on: January 26, 2024

Ecologically relevant spatial memory use modulates hippocampal neurogenesis.

Lara D LaDage1, Timothy C Roth, Rebecca A Fox

  • 1Department of Biology, University of Nevada-Reno, 1664 North Virginia Street, Reno, NV 89557, USA. lladage@unr.edu

Proceedings. Biological Sciences
|November 27, 2009
PubMed
Summary
This summary is machine-generated.

Spatial memory experiences, like food caching, directly impact adult hippocampal neurogenesis in birds. Restricting these memory tasks lowered new neuron production, suggesting a direct link between memory use and brain plasticity.

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Related Experiment Videos

Last Updated: Jun 18, 2026

Assessing Human Spatial Navigation in a Virtual Space and its Sensitivity to Exercise
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Published on: January 26, 2024

Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis
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Published on: August 20, 2020

Methods for the Modulation and Analysis of NF-κB-dependent Adult Neurogenesis
14:58

Methods for the Modulation and Analysis of NF-κB-dependent Adult Neurogenesis

Published on: February 13, 2014

Area of Science:

  • Neuroscience
  • Behavioral Ecology
  • Comparative Biology

Background:

  • Adult neurogenesis occurs in the hippocampus of birds and mammals, integrating new neurons into neural circuits.
  • Regulation of adult hippocampal neurogenesis is not fully understood, with spatial memory being a potential influencing factor.
  • Previous studies linking memory use to neurogenesis have been inconclusive due to confounding variables.

Purpose of the Study:

  • To investigate the direct effect of ecologically relevant spatial memory experiences on adult hippocampal neurogenesis.
  • To determine if food caching and retrieval behaviors modulate neurogenesis in mountain chickadees.
  • To differentiate the impact of memory experience from motor activity or task training on neurogenesis.

Main Methods:

  • Assessed neurogenesis rates in mountain chickadees (Poecile gambeli) using doublecortin expression as a marker.
  • Compared neurogenesis in captive birds with restricted spatial memory experiences versus those with memory-enriching experiences.
  • Compared neurogenesis in captive birds with free-ranging conspecifics.

Main Results:

  • Captive birds with restricted memory experiences showed significantly lower rates of hippocampal neurogenesis compared to those with memory-enriching experiences.
  • Neurogenesis rates in both captive groups were substantially lower than in free-ranging birds.
  • Ecologically relevant spatial memory experiences directly modulated hippocampal neurogenesis, independent of other confounds.

Conclusions:

  • Ecologically relevant spatial memory experiences, such as food caching, directly influence adult hippocampal neurogenesis.
  • The findings suggest a causal link between specific memory use and the regulation of new neuron production in the avian hippocampus.
  • These results contribute to understanding the interplay between behavior, memory, and brain plasticity in adult animals.