The Human Brain : From Neurone to Nervous System


  1. The cerebral cortex is a continuous sheet of complex inter-connected neural tissue covering the surface of the cerebral hemispheres.

  2. Different areas of the cortex have different functions that have been identified in animal experiments and investigations on humans.

  3. Scientists and neurosurgeons have used a variety of methods to find out which parts of the cerebral cortex do different jobs.

  4. The spatial Localisation of different functions has been elucidated using studies of
    • Localised lesions of the cortex,
    • Electrical or magnetic stimulation of localised regions during neurosurgical operations,
    • Changes in local blood flow or metabolism during physiological events,
    • Evoked potentials , and
    • Recording of electrical activity from neurones in the cortex, which allows the neural processes underlying different physiological function to be understood.

    Key Words : Spatial Localisation of functions, lesions, stimulation, blood flow, evoked potentials, recording from neurones.