From "one thousand nine hundred and forty-five" to 1000,945.

A patient, D.M., with spared number reading and number comprehension was found to show a transient selective syntactic impairment in writing numbers to dictation. For example, when he heard "One thousand nine hundred and forty-five", he wrote 1000,945. These errors are explained in terms of a dissociation between the concatenation and overwriting rules in the model proposed by Power and Dal Martello (Lang. Cognit. Processes 5, 237-254, 1990).