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The anterior part of the temporal lobe, important in networks supporting semantic representations. Progressive degeneration can affect this region and its connections rather than one isolated processing node.

A cognitive neuroscientist whose research distinguishes semantic representations from the control of their use, including comparisons between stroke aphasia and semantic dementia.

A fluent aphasic syndrome in which comprehension, repetition and informative speech can all be impaired. Acoustic–phonological analysis, semantic representations and semantic control must be distinguished; receptive difficulty does not imply preserved production.^[ref]