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Psychological Terms: S Satisficing Schema Search Asymmetry Selective Attention Self-Reference Effect Semantics Sense Serial Position Curve Serial Processing Set Shadowing Shallow Processing Simple Cell Simulation Heuristic Single Cell Recording Source Confusion Source Memory Speech Acts Speech Isolation Syndrome Speech Segmentation Spreading Activation Stroop Effect Subthreshold Activation Subvocalization Sufficient Conditions Summation Sunk Cost Effect Support Theory Surface Structure Synapse Synesthesia Syntax

Psychology >> Psychology Terms >> Aphasia >> Speech Isolation Syndrome

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Speech Isolation Syndrome

A form of aphasia caused by damage mainly in the lower regions of the left temporal lobe. Patients with this disorder can neither produce (like Broca's aphasics) nor comprehend speech (Wernicke's aphasics), but they can restate verbatim what is said to them, articulate proverbs, and even correct grammar mistakes in a phrase that is repeated.

In speech isolation syndrome, the major speech areas (e.g., Broca's and Wernicke's) are sufficiently intact, but they are isolated from other areas of the brain that generate the thoughts to be spoken out later.

Therefore, the patients can repeat phrases and sentences said by other people but cannot extract their meaning. The patients' own thoughts cannot be encoded into speech.

Remarkably, some patients with speech isolation syndrome can relatively easily learn new commercial jingles and songs, while not being able to hold a conversation.