One of the biggest ethical controversies in neuroscience these past few years has been the emergence of BCIs (brain-computer interfaces). Are they invasive of people’s privacy? Is there a possibility they will do, or collect more than they’re supposed to? I recently had the privilege of listening to Joe Vukov speak about research conducted by Casey H. Halpern in using BCIs as a potential new treatment for people who struggle with LOC (loss of control eating disorder) called, “Brain-Responsive Neurostimulation for Loss of Control Eating: Early Feasibility Study”. In his study, he explored a type of closed-loop BCI that detects brain signals linked to LOC eating and delivers electrical stimulation to stop binge episodes before they happen. This research explores how brain-responsive neurostimulation could become a new treatment for severe obesity and other disorders involving impulsivity. An ethical question in this study could be, if this device can detect an impulse before it even happens, how much access is it really getting to all thoughts and behaviors?
Another study I recently came across was published by Science Daily on advancements in BCI conducted by researchers at Columbia University School of Engineering and Applied Science, titled, “Scientists reveal a tiny brain chip that streams thoughts in real time”. In this study, they push the limits of speed and capabilities held by current BCI technology with a new microscopic brain implant referred to as BISC (Biological Interface System to Cortex). This implant, which is thinner than a human hair, has thousands of tiny electrodes, and one of its defining features is its ability to wirelessly transmit brain activity in real time, much faster than current BCIs. The researchers who conducted this study are hopeful that this brain chip could help people with neurological disorders such as epilepsy, paralysis, and blindness by helping them regain speech, movement, or vision. Part of what makes this study so interesting is that it focuses on improving the actual technology behind BCIs, making them smaller, less invasive, and more efficient. Compared to Halpern’s study, which uses BCIs to intervene in behaviors like binge eating, this implant focuses more on expanding what BCIs may be capable of in the future, rather than on one specific health goal.
These two articles were interesting to me together because they show just how quickly BCI technology is advancing and how broad its applications may become. The difference in purposes for these studies is what leads me to several of my ethical questions that came up as I was looking through BCI research, two of which are: When do we decide that BCI treatment is necessary and helpful versus unnecessary and controlling? And, could increasing reliance on BCIs in treating disorders change the way society defines personal responsibility and free will? In the second article, there is emphasis on making BCIs more advanced than ever, and with natural human suspicion, especially in today's society, on how much control is too much. In the case of an extremely advanced BCI being used to help someone speak, would there be societal suspicion in how much of the speech is actually exactly what they were meaning to say, or how much of their speech would be the technology filling in the gaps of what it collected? In this case, this brings in the question of a person’s free will and autonomy. Did they grant away some of their autonomy when they agreed to having a BCI implant in the first place?
References:
Wu, Hemmings, et al. “Brain-Responsive Neurostimulation for Loss of Control Eating: Early Feasibility Study.” Neurosurgery, vol. 87, no. 6, 2020, pp. 1277–1288, doi:10.1093/neuros/nyaa300.
“A Tiny Wireless Implant Could Transform Treatment for Brain Disorders.” ScienceDaily, 9 Dec. 2025, www.sciencedaily.com/releases/2025/12/251209234139.htm.
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