The frontal convexity syndrome is one of the behavioral patterns that may occur following injury to the frontal lobe. Its main feature is that the person is apathetic.


Clinical features:

(1) apathetic and indifferent

(2) may have occasional, brief, aggressive outbursts

(3) psychomotor retardation

(4) stimulus boundedness

(5) motor perseveration and impersistence

(6) discrepant motor and verbal behavior

(7) motor programming deficits (see below)

(8) poor word-list generation

(9) poor abstraction and categorization

(10) segmented approach to visuospatial analysis


Motor programming deficits:

(1) multiple loops

(2) rhythm tapping

(3) reciprocal programs

(4) alternating programs

(5) three step hand sequences


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