CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Electroconvulsive therapy

medical procedure

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 18, 2026
Entity authorityQ131543 ↗
Source-derived summary

Electroconvulsive therapy (ECT) is a psychiatric treatment that causes a generalized seizure by passing electrical current through the brain. ECT is often used as an intervention for mental disorders when other treatments are thought to be inadequate. Conditions responsive to ECT include major depressive disorder, mania, and catatonia.

ECT evolved from early seizure-inducing treatments and 18th–19th century electrical experiments into a formal procedure in the 1930s, later becoming widely used in the 1940s–50s. It then declined in use due to safety concerns and negative perception. With the introduction of anesthesia, muscle relaxants, and improved techniques, it became more safe and regulated, leading to its modern use as a treatment for severe psychiatric conditions.

The general physical risks of ECT are similar to those of brief general anesthesia.

Immediately following treatment, the most common adverse effects are confusion and transient memory loss. Among treatments for severely depressed pregnant individuals, ECT is one of the least harmful to the fetus.

The usual course of ECT involves multiple administrations, typically given two or three times per week until the patient no longer has symptoms.

Editorial summary

This brief starts where responsible research should: with the source description of “Electroconvulsive therapy” as medical procedure. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current 181-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. The account is most persuasive where Electroconvulsive, therapy and medical can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as medical procedure. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q131543. The Library of Congress control number is sh85041999. 1 of 1 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Electroconvulsive therapy”, its source revision and the description used here.
  2. Expand the search: follow Electroconvulsive therapy primary sources, Electroconvulsive therapy archive and Electroconvulsive research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Electroconvulsive therapy”?
  2. Which cited source is closest to the event, object or claim?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Electroconvulsive therapy” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.