Understanding the Neuroscience and Philosophy of Consciousness

By Yusuf Lenfest

Think of the last few times you’ve had a very lifelike dream. Running, reading, or having conversations with others, are all activities that might happen during a particularly vivid dream. But would this be considered consciousness? Surely being in a state of sleep is not the same as being in a waking state; but if you are able to communicate, to attend a lecture, perhaps even to give a lecture whilst you sleep, what does this mean in terms of your brain’s activity? Very deep in the sleep cycle, a person may not respond immediately to touch or sound or any other sensory stimulus. That is, they may not wake up, though it cannot be ruled out that an external stimulus might influence the sub-conscious mind and hence their dream. We’ve all had the experience of hearing an alarm “in our dream” which is really our real alarm, yet our mind re-interprets it and incorporates it into our dream until we regain consciousness, i.e., wake up. What if you couldn’t wake up from your unconscious state? And if so, what would this mean for how your brain processes your thoughts? In effect, what would it mean for your lived reality if you could only live in your mind?

Beyond being a fun thought experiment, these may be some very relevant questions now that doctors have treated a vegetative-state patient with an experimental therapy leading him to regain partial consciousness.

It was reported yesterday in National Geographic, Popular Science, the Guardian, and elsewhere that a 35-year-old man who had been in a persistent vegetative state (PVS) for 15 years has shown signs of consciousness after receiving a pioneering therapy involving nerve stimulation. The French researchers reported their findings to the journal Current Biology. Led by Angela Sirigu, a cognitive neuroscientist and director of the Institut des Sciences Cognitives Marc Jeannerod in Lyon, France, a team of clinicians tried an experimental form of therapy called vagus nerve stimulation (VNS) which involves implanting a device into the chest designed to stimulate the vagus nerve. It works by giving off miniscule electrical shocks to the vagus nerve, a critical brain signal that interfaces with parasympathetic control of the heart, lungs, and digestive tract.

So again, what does it mean to be conscious?

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Medicine and Ethics: Religious or Secular?

By Yusuf Lenfest

There is no lack of controversy when talking about religion and medicine in America today. Medicine is studied, practiced, and firmly rooted in the corporal world while religion draws inspiration from texts, traditions, and the incorporeal. Yet from an historical perspective, religious pasts do shape the present, particularly in the realm of ethics and moral reasoning. Indeed, whatever one’s spiritual or philosophical predilections, religion continues to play a major role in the dialogue on medicine and health care in Western society.

Bioethics in particular has become a topic of growing interest in America, but there has been little critical discussion about its contextual underpinnings, which stem largely from a Western Christian perspective. This is not to say that another religion would arrive at radically different system of morals. While differences do exist amongst religious traditions, across both space and time, experience and common sense tell us that diverse religious traditions do in fact share in much of the same moral principles and foundations. So what might other religious traditions say about, or contribute to, the discourse on bioethics? Should religion even be included in the conversation, especially given that health care and healing belong to the sphere of medicine?

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