Stuttering caused by abnormality in brain structure
9 August 2002
A structural abnormality in the left hemisphere of the brain causes persistent developmental stuttering, German researchers say.
This disconnection of speech-related areas in the cortex — seen on magnetic resonance imaging — sheds light on decades of uncertainty about the condition's origin (Lancet 2002; 360: 380-83).
The abnormality probably developed during early language and speech acquisition, the time at which many children experienced transient stuttering, the researchers said.
Persistent developmental stuttering has a genetic basis and affects about 1 per cent of people beyond puberty.
Last Reviewed: 09 August 2002
- 1. Medical Observer Weekly 9/8/02
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