Electroencephalography (EEG) Questions With Solutions

Electroencephalography (EEG) Questions
With Solutions

Neurophysiological basis of EEG: • Single neuron activity is too small to be picked up by

EEG

• EEG reflects the summation of the synchronous activity of many neurons with similar spatial

orientations

• Cortical pyramidal neurons produce most of the EEG signal




Neural basis of EEG: Pyramidal neurons are spatially aligned and perpendicular to the

cortical surface.

Thus, EEG represents mainly the postsynaptic potentials of pyramidal neurons close to the

recording electrode.




Neurophysiology basis of EEG Single neutron activity is too small to be picked up by

EEG

EEG reflects the summation of the synchronous activity of many neurones with similar spatial

orientations

Deep sources (subcritical areas) are much more difficult to detect than current near the skull




Psychiatric disorder diagnosis •Attention deficit disorder •Autism