Science Fictions Episode 96: Electroconvulsive therapy
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Feb 17, 2026 A deep dive into the controversy around electroconvulsive therapy. They trace its gruesome history and modern, anaesthetised practice. They examine the shaky clinical trials, sham controls, and ethical arguments for and against more research. They unpack evidence on cognitive and autobiographical memory harms and debate how clinicians weigh risks for the most severe cases.
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Sham Trials Face Strong Blinding Challenges
- Sham-controlled ECT trials use anaesthesia to mask whether patients received ECT, aiming to control expectation effects.
- Even so, side effects and post-ECT sensations may unblind participants, complicating interpretation.
Sham Studies Are Old And Inconclusive Long-Term
- Most sham ECT studies are old (1959–1985) and show short-term benefit but no long-term effect at follow-up.
- The age and small sizes of those trials weaken confidence in durable ECT efficacy.
Quality Assessments Show Weak Evidence Base
- Critical reviews created a 24-point quality scale and found most sham trials scored poorly on methodology.
- Low average quality implies the evidence base cannot reliably establish ECT's efficacy versus sham.
