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Correlation between convulsive seizure and geomagnetic activity

M Rajaram, S Mitra

    Neuroscience Letters
    |July 2, 1981
    PubMed
    Summary
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    Annual convulsive seizure rates in Calcutta correlate with solar activity, specifically sunspot numbers and geomagnetic indices. This highlights the importance of solar activity in neurological studies.

    Area of Science:

    • Neurology
    • Space Physics
    • Environmental Science

    Background:

    • Convulsive seizures are a significant neurological event.
    • Solar activity, including sunspot numbers and geomagnetic indices, fluctuates cyclically.
    • Previous research suggests potential links between environmental factors and neurological conditions.

    Purpose of the Study:

    • To investigate the correlation between annual convulsive seizure incidence and solar activity.
    • To determine if geomagnetic activity influences seizure rates.
    • To assess the importance of data selection in solar-biological effect studies.

    Main Methods:

    • Statistical analysis of annual patient data from the Bangur Institute of Neurology, Calcutta (1955-1971).
    • Correlation analysis with annual sunspot numbers.

    Related Experiment Videos

  • Correlation analysis with geomagnetic activity indices.

    • Main Results:

    • A significant positive correlation was found between the annual percentage of patients with convulsive seizures and annual sunspot numbers.
    • A significant correlation was also observed with specific geomagnetic activity indices (p < 0.01).
    • The choice of data series elements critically impacts the observed solar-biological effects.

    Conclusions:

    • Solar activity, indicated by sunspot numbers and geomagnetic indices, is significantly correlated with the incidence of convulsive seizures.
    • These findings underscore the influence of space weather on neurological health.
    • Careful consideration of data selection is crucial for accurately establishing biological effects of solar activity.