The experience of an inner voice relies on auditory cortex activation and speech motor simulation

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

The neurobiological literature indicates that experiencing inner speech involves motor planning regions communicating with auditory cortices via efference copies and predictive mechanisms.

The analysis

The retrieved papers, specifically those examining inner speech and auditory verbal hallucinations (such as papers 2 and 6), support the model that inner speech engages speech motor regions and relies on auditory cortex activation and efference copy monitoring. The balance of evidence clearly supports the claim.

Evidence for · 2

Impaired Speaking-Induced Suppression Predicts Degraded Agency and Hallucination Severity in Schizophrenia.

Recorded source metadata

Tan S, Jia Y, Mathew M, Jariwala N, Pongos A, Brent K, Ford J, Mathalon D, Houde J, Nagarajan S, Subramaniam K. Impaired Speaking-Induced Suppression Predicts Degraded Agency and Hallucination Severity in Schizophrenia.. 2026. https://doi.org/10.1016/j.bpsc.2025.10.011

Paper 2 discusses how speech and inner thought monitoring rely on auditory cortical responses and predictions related to self-generated speech.

Source citation format

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More for · 1

Inner speech and the neurobiology of psychosis

Recorded source metadata

Skipper JI, Lametti DR, Green DW. Inner speech and the neurobiology of psychosis. 2025. https://doi.org/10.1101/2025.08.22.671634

Paper 6 reviews how inner speech relies on motor-related regions (such as ventral premotor cortices) sending efference copies to auditory cortices.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 7701 Aug 2026

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