The four lobes of the brain that can be seen from the external surface are 1) Occipital Lobe (vision), 2) Parietal Lobe (sensation & spacial perception) 3) Temporal Lobe (Hearing, Understanding, Identification & Naming) 4) Frontal Lobe (Movement, Expression, Planning, Personality, Self Control & Executive Function). 

The Frontal Lobe

The largest lobe of the cerebral cortex is the Frontal Lobe. It is the part of the brain that controls Attention, Movement, Personality & Thinking (along with other parts of the frontal circuits).

People who have had strokes in the Left Frontal Lobe often experience Depression 60-80%) (Robinson 1997). People who have had strokes in the Right Frontal Lobe rarely experience Depression (2-5%) (Robinson 1997). People who are depressed, often have lower frontal lobe activity. Without good frontal lobe function, people have difficulty with (working) memory, getting things organized, starting activities, paying attention, seeing the "big picture" and connecting with others in a socially appropriate way. 

Parts of Prefrontal Cortex:

DLPFC Dorsolateral Prefrontal Cortex (BA9,46) (Executive Function, Self Control, WM)

Frontal Pole (BA10) (Higher function, hierarchical context, narrative)

Anterior Cingulate Cortex (BA32,24) (Feelings, pain, motivation, self monitoring)

OrbitoFrontal Cortex (BA11) (sensory hub, choice: eat?/not, good/bad & expectation)

Subgenual Cortex (BA25) (Thought/feeling interface? Sleep, Appetite, XS in depression)

Broca’s Area (BA44,45) Expressive Language (talking)