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Maternal spatial training before fertilization improves the spatial learning process in female offspring.

Javad Riyahi1, Behrouz Abdoli1, Francesca Gelfo2,3

  • 1Department of Cognitive and Behavioral Science and Technology in Sport, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran.

Neuroreport
|July 20, 2021
PubMed
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Maternal spatial training before fertilization enhances offspring

Area of Science:

  • Neuroscience
  • Behavioral Neuroscience
  • Epigenetics

Background:

  • Parental spatial training prior to conception has been shown to improve offspring spatial memory.
  • The precise mechanisms and impact on the entire spatial learning process in offspring remain unclear.

Purpose of the Study:

  • To investigate the specific effects of maternal spatial learning before fertilization on the spatial learning and memory processes in female offspring.
  • To determine if maternal training influences short-term/working memory, long-term memory, and memory consolidation in offspring.

Main Methods:

  • Female Wistar rats underwent spatial training in the Morris Water Maze (MWM) or served as controls.
  • Trained and control females were mated, and their female offspring were tested in the MWM.

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  • Offspring performance was evaluated based on escape latency, swimming speed, distance swum, and target quadrant exploration.

    • Main Results:

    • Female offspring of trained mothers exhibited significantly improved spatial learning, evidenced by lower escape latencies and shorter swim distances.
    • These offspring also showed enhanced memory retention, demonstrated by increased time spent in the target quadrant.
    • A significant correlation was observed between the MWM performance of trained mothers and their female offspring.

    Conclusions:

    • Maternal spatial training before fertilization positively impacts the spatial learning and memory consolidation capabilities of female offspring.
    • These findings suggest a transgenerational effect of learned behaviors on cognitive function.
    • The study highlights the potential for environmental enrichment in parents to influence offspring's spatial cognitive abilities.