The frontal lobe of the brain plays a key role in higher mental functions such as motivation, planning, social behaviour, and speech production. **A frontal lobe syndrome can result from a range of causes inlcuding head trauma, tumours, degenerative diseases and cerebrovascular disease. Impairment of frontal lobe functioning is also found in a range of psychiatric conditions including schizophrenia, attention deficit disorder and antisocial personality disorder. **Frontal lobe impairment can be detected by recognition of typical clinical signs, use of simple screening tests, and specialist neuropsychiatric testing
The frontal lobe has three main areas, known as the precentral cortex, prefrontal cortex and the orbitofrontal cortex. These three areas are represented in both the left and the right cerebral hemispheres.
The precentral cortex or primary motor cortex is concened with the planning, initiation and control of physical movement. The dorsolateral part of the frontal lobe is concerned with planning, strategy formation, and other executive functions. The prefrontal cortex in the left hemisphere is involved with verbal memory while the prefrontal cortex in the right hemisphere is involved in spatial memory. The left frontal operculum region of the prefrontal cortex, or Broca’s area, is responsible for expressive language, in other words language production. The orbitofrontal cortex is concerned with response inhibition, impulse control , and social behaviour.