b&w photograph Very good condition. A man in an armchair is connected to some equipment via electrodes attached to his head while people gather to watch. A sign on the wall says "Biofeedback." Came in envelope marked 'Science Saturday '80 '81'. Label on back reads: 'Please Return To: Information & Public Relations, Saint Mary's University Halifax N.S., B3H 3C3'. Written in pencil on back '3'.