electroencephalographical

• a word derived from electroencephalograph.
  electroencephalograph

  noun

  an instrument for measuring and recording the electric activity of the brain.

More Suggestions

• electroencephalogram
• echoencephalograph
• pneumoencephalography
• echoencephalogram
• electronic graphics
• electrophotography
• electrocardiograph
• electrochromatography
• electrocorticography