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Memory functions six to nine months after electroconvulsive therapy.

L R Squire, P M Chace

    Archives of General Psychiatry
    |December 1, 1975
    PubMed
    Summary

    Electroconvulsive therapy (ECT) did not show lasting memory impairment in patients six to nine months post-treatment. However, those receiving bilateral ECT reported more memory issues than other groups.

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    Area of Science:

    • Neuroscience
    • Psychiatry
    • Cognitive Psychology

    Background:

    • Electroconvulsive therapy (ECT) is a treatment for severe mental health conditions.
    • Concerns persist regarding potential long-term cognitive side effects, particularly memory impairment.

    Purpose of the Study:

    • To assess persistent memory functions in patients who previously underwent electroconvulsive therapy (ECT).
    • To compare memory outcomes between bilateral ECT, right unilateral ECT, and non-ECT hospitalization groups.

    Main Methods:

    • 38 former patients were evaluated 6-9 months after treatment.
    • Six distinct tests measured delayed retention and remote memory.
    • Patient self-ratings of memory function were also collected.

    Main Results:

    • Objective memory tests revealed no evidence of enduring memory deficits.
    • Patients treated with bilateral ECT reported significantly more memory impairment than other groups.
    • A potential discrepancy between objective findings and subjective patient reports was noted.

    Conclusions:

    • Objective memory functions appear to recover after electroconvulsive therapy (ECT).
    • Subjective memory complaints, especially after bilateral ECT, warrant further investigation.
    • Heightened awareness of memory function post-ECT may influence self-perception of impairment.

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