6. ADHD / Hyperkinetic disorder

6.2. Causes of the syndrome

Important etiological theories:

  • evolutionary
  • genetic
  • dietetic
  • traumatic
  • neurological http://www.red-tulip.cz/
  • psychosocial

Neuroanatomical abnormalities:

  • nucleus caudatus
  • frontal lobe
  • corpus callosum
Neurophysiological abnormalities:

abnormalities of electrical activity of the brain: activity level corresponding to younger age

  • delta 1-3 Hz deep sleep
  • theta 4−7 Hz superficial sleep, meditation, hypnosis
  • alpha 8-12 Hz basic vigilance
  • SMR 12−15 Hz relaxed attention
  • beta 15−20 Hz focused attention, free concentration
  • beta2 21−30 Hz hyperexcitation, tension, irritation, anxiety
  • gamma 31Hz and more Hz top performances, top experiences
  • abnormalities in blood flow to certain parts of the brain
  • abnormal metabolic activity in some parts of the brain

Neurotransmitter deficiency