Brain-computer interfaces, or BCIs, can help people with severe injuries or impairments regain the ability to communicate or move their arms and legs through robotic substitutes. The devices, which are about the size of a dime and are implanted on the surface of a person鈥檚 brain, serve as a communication link between the brain鈥檚 neural activity and an external device, such as a computer or a robotic limb.
Ways of Knowing
The World According to Sound
Season 2, Episode 8
The Ethics of Technology
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Chris Hoff: About one in 50 Americans has some form of paralysis. Most of these cases come from spinal cord injuries, which most frequently happen in car accidents.
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CH: Paralysis can mean anything from total loss of body control to the loss of the function of specific limbs. But there are emerging technologies offering hope 鈥 things that might one day be able to restore the use of a person鈥檚 arms or legs, and can even now allow a person to control a robotic arm just using their thoughts. They鈥檙e called brain-computer interfaces.
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Sara Goering: And they are about the size of a dime, maybe? Pretty small. They get implanted usually on the surface of somebody鈥檚 brain.
CH: Sara Goering, professor of philosophy at the 天美影院. She specializes in disability and bioethics.
SG: That requires a surgery, right? It requires a burr hole in the skull to get access to the surface of the brain. And from there it can read the electrical activity that is going on in a certain cortical region.
CH: People with severe injuries or impairments 鈥撯 often those who have experienced strokes or are paralyzed 鈥撯 can benefit the most from these brain-computer interfaces, or BCIs. BCIs can help people who have lost the ability to speak, communicate again or those who can鈥檛 use their arms or legs learn to use robotic substitutes.
SG: BCI devices are things that are on or in the brain, and they鈥檙e reading neural activity, and then they鈥檙e using it to control something outside the body. So it鈥檚 a kind of reading out of the brain.
CH: Imagine squeezing your fist. When you have that thought, there鈥檚 a certain pattern of brain activity that occurs. BCIs can capture that pattern, and translate it into action. So if you have a robotic arm hooked up to a BCI, by merely imagining the phenomenon of squeezing your fist, you can make the robotic arm do just that.
SG: It鈥檚 a totally new way of interacting with the world because you鈥檙e not using your own musculature to use something, you鈥檙e using your brain and your concentration to control the robotic arm.
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CH: The potential benefits of brain-computer interfaces to medical science are enormous. People who are completely or partially paralyzed could one day regain the use of their affected limbs, allowing them to walk again. If you have a neurodegenerative disease like ALS and you鈥檝e lost your faculties of speech, BCIs can help. By merely thinking of the words, a BCI can be trained to decode them and then express those words with a computer generated voice.聽
The ethical questions that brian computer computer interfaces bring up are also enormous 鈥 and they center around concepts of agency.
SG: These questions of agential responsibility are really deeply bound up with our sense of agency in the world and now we鈥檙e developing these devices that offer mediation on that agency. And not one that鈥檚 visible to us in the same way that cell phones or other things are. It becomes an embodied part of how we are in the world.
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CH: If I鈥檓 at a bar and I hit somebody in the face with my own hand, it鈥檚 pretty clear that I鈥檓 responsible for that. I am in control of my arm and hand. I have agency over my own body. But let鈥檚 say I got into an accident and I lost the use of my arms. So instead, I hit somebody in the face with a robotic arm that I鈥檓 controlling with a computer chip inside my head. Who鈥檚 to say whether I actually intended to hit him, or if something instead simply malfunctioned? The robotic arm isn鈥檛 even a part of my body 鈥 it鈥檚 physically detached from me. How responsible do I feel now?聽
SG: People really quickly, we might say, incorporate that sense. It becomes part of them, so they think of themselves as having the robotic arm as part of them. They鈥檙e moving it, they鈥檙e responsible for it when it鈥檚 successful. And then when it鈥檚 not successful, they鈥檙e less inclined to take responsibility for that.
CH: In other words, I take responsibility when my robotic arm does something I like, but am less quick to do so when it does something I don鈥檛 like.
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CH: Controlling a robotic arm or leg with your thoughts is one thing. Having a computer read those thoughts, and potentially share them with other people, is something else.
SG: When we think about a sense of agency, we鈥檙e often thinking about how we enact intentions in the world and how we move our bodies. I think part of what it is to be an agent is to have internal private space. And that becomes a much more publicly accessible thing when we have such devices. But generally, the things in my head, I decide when I鈥檓 going to share them.聽
CH: With computer chips implanted in our brains, that could become increasingly more difficult. For Sara, it鈥檚 essential that the researchers and companies building BCIs ensure that the privacy of the person using it is incorruptible 鈥 that it鈥檚 impossible for anybody who doesn鈥檛 have permission to access their thoughts.聽聽
SG: We鈥檙e all online, we put our banking, our social media, intimate thoughts we share. Those things are corruptible, hackable and then stuff we thought was private to us is shared. But if the thoughts that you haven鈥檛 even expressed, or the neural processing that you鈥檙e doing that鈥檚 running in the background that you haven鈥檛 even expressed in any way, that seems really worrisome. But then, if anybody can hack into that, right? Suddenly the movements that you are taking yourself to be making could be hackable. That seems horrifying to me.
CH: With corporate-owned computer chips implanted in someone鈥檚 head, the danger of them being abused is obvious. And that鈥檚 to say nothing of more pragmatic things. Like what happens if there鈥檚 a bug in the technology, or something malfunctions?
SG: Also let鈥檚 think, you have hardware put in your head that takes a surgery to get it there, takes a surgery to get it out of there. And hardware goes bad, leads go bad, electrodes 鈥 there鈥檚 scarring around them that doesn鈥檛 work anymore. And then what happens if the company goes under? There are lots of cases out there of people who are getting good benefits and the company, it鈥檚 not profitable and so it goes under.
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SG: These are technologies that are really cool and exciting but can fundamentally alter the way we are in the world, and we should be thinking really carefully about those and what it means. I think there鈥檚 some good to be done from thinking about that very abstractly, as a philosopher or an STS person or something. But I think there鈥檚 a lot of value in really being on the ground with people who are developing them and the early users of them to understand what it鈥檚 like in practice. We can shape the way it goes by being part of that.
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CH: To treat any new technology or innovation as an example of progress is clearly flawed. Brain-computer interfaces aren鈥檛 de facto good. Some aspects of them are extremely beneficial, others seem potentially nightmarish. The ethics of technology aims to uncover all the possible consequences of a new tech on human beings and society, and above all, to protect against the misuse of technology.
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CH: Here鈥檚 five texts that鈥檒l help you learn more about technology and ethics as a way of knowing.
鈥淭he Battle for Your Brain,鈥 by Nita Farahany
CH: A book that navigates the complex legal and ethical dilemmas posed by modern neurotechnology.
鈥淏ionic Pioneers,鈥 by Jennifer French and James Cavuoto
CH: This tells the stories of 10 people with neurological disabilities who made the decision to use a neurotech device to treat their condition.
鈥淧olicy, Identity, and Neurotechnology,鈥 edited by Veljko Dubljevi膰 and Allen Coin
CH: A volume that looks at the past, present and future of brain-computer interfaces聽
鈥淲hat is it like to use a BCI? 鈥 insights from an interview study with brain-computer interface users鈥
CH: A paper that explores the social and ethical implications of BCIs
鈥淒oing Things with Thoughts: Brain-Computer Interfaces and Disembodied Agency鈥
An essay that treats the philosophical and legal ramifications of BCIs on our conceptions of agency and what it means for a human to 鈥渁ct.鈥
CREDITS
Ways of Knowing is a production of The World According to Sound. This season is about the different interpretative and analytical methods in the humanities. It was made in collaboration with the 天美影院 and its College of Arts & Sciences. All the interviews with 天美影院faculty were conducted on campus in Seattle. Music provided by Ketsa, Human Gazpacho, Graffiti Mechanism, Serge Quadrado, Bio Unit, and our friends, Matmos.
The World According to Sound is made by Chris Hoff and Sam Harnett.
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In this episode, , a 天美影院 professor of philosophy, discusses the ethical concerns surrounding BCIs 鈥 from questions of agency to hackability to medical and technical issues. While the benefits of BCIs are enormous, Goering says it鈥檚 also important to carefully consider the ways they are fundamentally altering the way we see the world.
This is the eighth episode of Season 2 of 鈥淲ays of Knowing,鈥 a podcast highlighting how studies of the humanities can reflect everyday life. Through a partnership between The World According to Sound and the 天美影院, each episode features a faculty member from the 天美影院College of Arts & Sciences, the work that inspires them, and suggested resources for learning more about the topic.