Lesions in the temporal lobe can cause trance-like states, memory disturbances, and mood symptoms. The occipital lobe at the back of the brain is responsible for collecting and integrating visual stimuli. A tumor here could cause visual disturbances. The frontal lobe is responsible for higher order thinking and behavioral inhibition. Neoplasms in the parietal lobe can impair speech, writing ability, object recognition, and spatial abilities.