The 20th century was a golden era for ethically dubious brain studies. In 1950, Dr Jose Delgado had a vision to control aggressive behaviour using a device surgically implanted in the brain known as the Stimoceiver. How science fictiony is that?!


Delgado's journey toward creating a peaceful human race started with a bully macaque monkey who had been terrorising his cage mates. After the Stimoceiver was implanted into the monkey’s brain, a lever was added to the cage. When pulled, the lever would activate the Stimoceiver and pacify the bully, much to his cage mates' delight, who learned quickly that the key to happiness in the cage was to pull the lever furiously.


Happy with his success, Delgado began testing on humans with most of his subjects (note: we did NOT use the word participants) being epileptics and schizophrenics. Heck, science couldn’t do anything more for them - might as well sacrifice them to science by sticking things in their brains. Although there were some mixed results, Delgado’s work did help some people, especially those suffering from chronic pain. His experiments showed the potential to spark euphoria, laughter, friendliness, and even anger in subjects, creating a new dimension of how the human mind could be influenced, modified, and inhibited by brain stimuli. 


In 1963, things got really interesting. Delgado wanted to test the limits of the stimoceiver implant and what better test subject for a Spanish doctor looking to maximise aggression than a fighting bull? Working with his wife and several assistants over three days, Delgado tranquillized the bulls, fitted stereotactic frames over their skulls, and inserted stimoceivers into their brains. 


Then into the bullring, he himself went (disappointingly, he missed a bucket-list-worthy opportunity to dress up as a Matador). When the raging bull charged, despite his outfit, Delgado had the upper hand. With the flick of a switch, the bull stopped in his tracks and turned the other way. This incredible demonstration catapulted Delgado into the public eye, but his research drew mixed reactions. Delgado’s desire to create a "psycho-civilized society" caused some discomfort, with critics fearing the implications of the technology in the wrong hands. Fair, considering the fascist regimes reigning at the time. 


To complicate matters, Delgado found himself embroiled in controversies beyond his making. Unrelated research suggesting neurotechnology could quell the violent tendencies of African-Americans who riot in inner cities fueled public discontent, as did another experiment by a different researcher claiming sexual orientation could be modified with brain stimulation.


But Delgado remained indifferent to the storm surrounding him. At age 89 in an interview with Scientific American, Delgado described himself as a libertarian and a pacifist whose goal as a scientist was to liberate us from our biology, especially from mental illness and violent aggression. 


Delgado ended his career by insinuating advances in knowledge and technology were inevitable. While ethics may offer a framework of restrictions, he believed that innovation would ensue nonetheless; clearly, he was a proponent of the “Move fast and break things” credo. However when the “thing” is a human brain, perhaps moving slowly is warranted.


Whether controversial or revolutionary, Delgado's work remains a testament to the power of asking "What if..."

 
 

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