Sebastian Seung, author of "Connectome" (BSP 85)

Dr. Sebastian SeungDr. Sebastian Seung (MIT) is an ambitious young scientist; his goal is to unravel the entire wiring diagram of the human brain. Considering that it took over a decade to determine the wiring diagram for the roundworm C elegans, which has a mere 302 neurons, it is clear that scientists can't leap directly to the 80 billion neuron human brain. Even so, in his new book Connectome: How the Brain's Wiring Makes Us Who We Are, Seung makes a very good argument for the value of this long term project. In Episode 85 of the Brain Science Podcast I talked with Dr. Seung both about the challenges and potential benefits of this work.

Listen to Episode 85

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Christof Koch returns to the Brain Science Podcast

Christof Koch, PhDThe scientific study of consciousness was once viewed with skepticism, but this has changed dramatically in recent years. According to pioneering neuroscientist Christof Koch, "the great thing is we’re not condemned to just sort of philosophical speculation, but we can make some predictions, and then go out and measure them.  And those are the things I talk about in this book, Confessions of a Romantic Reductionist." In Brain Science Podcast #84 Koch reflects on the progress that has been made since I interviewed him back in 2007 (BSP 22), and he also talks about the latest initiatives at the Allen Institute for Brain Research, where he as recently become the chief science officer. 

 Listen to Episode 84

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William Uttal on "Mind and Brain" (BSP 83)

William Uttal, PhD"There is nothing more exciting than the mind/brain problem" according to Dr. William Uttal, author of Mind and Brain: A Critical Appraisal of Cognitive Neuroscience. In the latest episode of the Brain Science Podcast (BSP 83) I talked with Dr. Uttal about why he feels that brain imaging can not solve this mystery. First, there is the problem that brain imaging represents the wrong level of analysis because every spot you see on a brain scan actaully represents thousands of neurons. This means that the activity and interaction between individual neurons has been lost. Then there is the problem of reproducibility, with divergent results between studies. The evidence is accumulating that "much of the brain responds to any stimulus, and every area of the brain participates in multiple functions." This means that asking where a given function occurs may be the wrong question.

BSP 83 represents an on-going discussion of these issues, so I have included links to related episodes in the show notes. 

 Listen to Episode 83

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Free Will and Brain Science (BSP 82)

In his latest book Who's in Charge?: Free Will and the Science of the Brain respected neuroscientist Michael S. Gazzaniga explores how the discoveries of neuroscience impact how we see ourselves as human beings. After providing a brief review of 20th century neuroscience, and even some of the work from the past decade, Dr. Gazzaniga concludes that nothing neuroscience has discovered changes the fact that "we are personally responsible agents and are to be held accountable for our actions."

Gazzaniga's position contrasts with those who think that recent discoveries show that the brain creates the mind in solely "upwardly causal" way, and who argue that since much of what our brain does is outside our conscious awareness or control, we should not be held responsible for our actions. Who's in Charge?: Free Will and the Science of the Brain presents what I think is a convincing argument against this common position.

In the latest episode of the Brain Science Podcast (BSP 82) I present a detailed discussion of Dr. Gazzaniga's book.

Listen to Episode 82

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Philosopher Patricia Churchland returns to the Brain Science Podcast

Patricia Churchland (photo by Nines Minequez)BSP 81 marks the return of philosopher Patricia Churchland, who I first interviewed back in Episode 55. Our recent conversation focuses on her latest book, Braintrust: What Neuroscience Tells Us about Morality. We discuss the historical background and contrast Churchland's approach to that of Sam Harris in The Moral Landscape. Then Professor Churchland discusses how recent discoveries in neuroscience are shedding light on the evolutionary origins of morality.

It's a fascinating conversation that you won't want to miss. 

Listen to BSP 81 (Free mp3)

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