How your brain is organised: a plain-language guide to brain functions

When someone has a stroke, a head injury or a neurological condition, the effects can seem puzzling. Why can one person still talk fluently but not remember what happened yesterday, while another remembers everything but struggles to plan a simple meal? The answer lies in how the brain is organised. Here is a simple map.

The four lobes

• Frontal lobes: at the front, behind the forehead. They handle planning, organising, decision-making, self-control, motivation and aspects of personality. These are often called executive functions. The frontal lobes also control movement and help produce speech.

• Temporal lobes: at the sides, near the ears. They are central to hearing, understanding language and forming new memories. Deep inside sits the hippocampus, which is essential for learning new information.

• Parietal lobes: towards the top and back. They combine information from the senses, help us judge space and distance, and support skills such as reading, writing and calculation.

• Occipital lobes: at the back of the head. They process vision, including recognising shapes, colours and movement.

Beneath the surface

• Limbic system: a group of structures, including the amygdala and hippocampus, involved in emotion, memory and the stress response.

• Cerebellum: at the back and base of the brain, coordinating balance and smooth movement, and contributing to some thinking skills.

• Brainstem: connecting the brain to the spinal cord and running automatic functions such as breathing, heart rate and sleep-wake cycles.

Left and right

The brain has two hemispheres joined by a thick bundle of fibres. In most people, the left side is more involved in language, while the right side contributes more to spatial awareness, recognising faces and reading emotional tone. The popular idea of "left-brained" and "right-brained" personalities is a myth, though: both sides work together all the time.

The brain works as networks

No area works alone. Remembering a friend's name involves attention, language, memory and emotion, drawing on several regions connected by pathways of white matter. This is why damage in one place can have effects that seem to belong elsewhere, and why the brain can sometimes adapt and find new routes after injury.

Where neuropsychology comes in

Brain scans show structure, but they do not always show how a person is actually coping day to day. A neuropsychological assessment measures thinking skills such as attention, memory, language, visual-spatial skills and executive functions, and links them to everyday life. The result is a clear picture of strengths and difficulties, and practical recommendations for treatment, rehabilitation, work or study.

If you or someone close to you has noticed changes in thinking after an illness or injury, you can request an initial consultation through the Request Appointment page. Sessions are available online in Arabic or English.

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