What does M stand for in Lichtheim's house?

What does M stand for in Lichtheim's house?

• A. Motor Representations (Broca's aphasia)
• B. Auditory Representation (Wernicke's)
• C. Conceptual Area
• D. Memory traces

Answer: (A)

In Lichtheim's house, the M label stands for motor representations—the stored motor plans for articulating speech that guide the production system. This is the pathway that connects meaning and sound to actual speech movements. When motor representations or their output pathways are damaged, speech production becomes impaired, as seen in Broca’s aphasia, where comprehension can be better preserved because the auditory/semantic side may remain intact. The other areas map to distinct functions: auditory representations handle the heard sound forms, conceptual area covers meaning and ideas, and memory traces aren’t the feature emphasized in Lichtheim’s labeling.

In Lichtheim's house, the M label stands for motor representations—the stored motor plans for articulating speech that guide the production system. This is the pathway that connects meaning and sound to actual speech movements. When motor representations or their output pathways are damaged, speech production becomes impaired, as seen in Broca’s aphasia, where comprehension can be better preserved because the auditory/semantic side may remain intact. The other areas map to distinct functions: auditory representations handle the heard sound forms, conceptual area covers meaning and ideas, and memory traces aren’t the feature emphasized in Lichtheim’s labeling.