Seth Grant's latest Research (BS 137)

Seth Grant's latest Research (BS 137)

In BS 137 neuroscientist Seth Grant introduces the "genetic lifespan calendar." He describes a new paper that describes how the genome determines the brain's complexity in "both time and space." This is the first paper to describe evidence that gene expression in the brain follows a predictable schedule that might offer new understanding of diseases like schizophrenia.

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Counting Neurons with Dr. Suzana Herculano-Houzel (BS 133)

Counting Neurons with Dr. Suzana Herculano-Houzel (BS 133)

This is an interview with Dr. Suzana Herculano-Houzel, the scientist who discovered that the human brain has an average of 86 billion neurons, which is significantly less than the 100 billion that was long assumed. She has also written a wonderful book called The Human Advantage: How Our Brains Became Remarkable.

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What is Mind? (BS 131)

In part 2 or our 10 Anniversary Retrospective we consider the question What is Mind? I reflect back on books and guests who have appeared in the last 5 years, and consider how my take on this question has evolved over the 10 years I have been creating  Brain Science (formerly called the Brain Science Podcast.) Listener feedback is also included.

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Ten Year Anniversary Show, Part 1 - The Early Years

In this very special episode, we begin a two part celebration of the 10 year anniversary for Brain Science. The podcast began in December 2006, which makes it one of the longest running shows since the first podcasts were launched in 2004.

Ten years is a lot of ground to cover, so for this episode we are only focusing on the early years from 2006 to 2011. Learn why the podcast began and get a peek into the format changes the show has had over the years. This episode contains something that you rarely see in the show - listener feedback! You'll get to hear what listeners think about the show, how they use the show to help them with their work, and you'll even get to hear from a critic! So many of you have reached out over the years, and although there isn't room for all our feedback in this episode, please know that each and every email that has been received is appreciated!

In today's episode Dr. Campbell discusses:

  • how the brain makes us human is an endlessly fascinating topic

  • favorite shows from the first 5 years of Brain Science

  • BSP 47 provides the best summary of what we know about brain evolution

  • favorite guests from the first 5 years

  • some of the decisions about the podcast frequency and the reasons beind them

  • the book review that got the show started

  • the best way to access past episodes of the show

  • shows mentioned are tagged with the term Embodied Cognition, so search for them that way

BSP 130 Ten Year Anniversary, Part 1 - The Early Years
Dr. Ginger Campbell

In this show, we mentioned the best ways to listen to episodes from our first 5 years. Our episode archive is available to Premium subscribers for only $5/month.  The best way to access these episodes is via the FREE Brain Science mobile app, which is available for iOS, Android, and Windows phone.

How to get this episode:

  • FREE: audio mp3 (click to stream, right click to download)

  • Episode Transcript [Buy PDF for $1]

  • Premium Subscribers have unlimited access to ALL old episodes and transcripts.

  • New episodes of Brain Science are ALWAYS FREE. All episodes posted after January 1, 2013, are free. See the individual show notes for links to the audio files.

Important Links

References

Announcements

  • Part 2 of our 10th Anniversary will be posted in January 2017

  • Please send your feedback to brainsciencepodcast@gmail.com.

Neuropsychology and the Study of Memory - Dr. Brenda Milner (BS 129)

Neuropsychology and the Study of Memory - Dr. Brenda Milner (BS 129)

BS 129 features pioneering neuroscientist Brenda Milner. Dr. Milner is best known for work work on memory including key discoveries she made while working with the famous patient HM. She also made important discoveries about the differences between the brain's hemispheres by studying the so-called "split brain" patients. This interview was recorded in 2008 when Dr. Milner was 90, but I am glad to report that she is still going strong at age 98.

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Phenomenology and Embodied Cognition (BSP 123)

Phenomenology and Embodied Cognition (BSP 123)

BSP 123 is an interview with philosopher Anthony Chemero, author of Radical Embodied Cognitive Science and Phenomenology: An Introduction with Stephan Käufer. The focus of this interview is understanding how phenomenology has influenced psychology and cognitive science.

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Dr. Ed Taub revolutionizes Stroke Rehab (BSP 119)

Dr. Ed Taub revolutionizes Stroke Rehab (BSP 119)

BSP 119 is the first half of a new interview with Dr. Edward Taub, inventor of Constraint Induced Movement Therapy, which is a revolutionary approach to rehabilitating people with brain injuries, such as stroke and trauma.

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BSP 115: Eastern Philosophy and Western Neuroscience

EvanThompson

Evan Thompson (click photo to buy BS 115 audio)

Scientific interest in the Mind and Consciousness is relatively new, but both Western and Eastern Philosophy have a long tradition of exploring these topics. In his new book Waking, Dreaming, Being: Self and Consciousness in Neuroscience, Meditation, and Philosophy, Evan Thompson explores how these diverse traditions can inform and enrich one another.

Thompson goes beyond a narrow view of consciousness, which focuses only on the waking state. Instead he considers how dreaming, lucid dreaming, and even near death experiences can advance our understanding of how our brain's generate both consciousness and our sense of Self. 

 How to get this episode:

Related Episodes:

  • BSP 5: Very brief introduction to Philosophy of Mind.

  • BSP 55: Patricia Churchland, PhD, discusses Neurophilosophy.

  • BSP 58: Alva Noë, PhD, discusses Out of Our Heads: Why You Are Not Your Brain, and Other Lessons from the Biology of Consciousness.

  • BSP 67: Thomas Metzinger discusses The Ego Tunnel: The Science of the Mind and the Myth of the Self.

  • BSP 73: Embodied Cognition with Lawrence Shapiro, PhD.

  • BSP 81: Patricia Churchland discusses Braintrust: What Neuroscience Tells Us about Morality.

  • BSP 89: Evan Thompson discusses Mind in Life: Biology, Phenomenology, and the Sciences of Mind.

  • BSP 96: Robert Burton, MD discusses A Skeptic's Guide to the Mind: What Neuroscience Can and Cannot Tell Us About Ourselves.

Announcements:

  • This month's Audible recommendation: The Teenage Brain: A Neuroscientist's Survival Guide to Raising Adolescents and Young Adults byFrances E. Jensen, MD

  • The next episode of the Brain Science Podcast will feature Dr. Norman Doidge talking about his new book The Brain's Way of Healing: Remarkable Discoveries and Recoveries from the Frontiers of Neuroplasticity.

  • Reminder: the 25 most recent episodes of the Brain Science Podcast are always free, but Premium subscribers have unlimited access to all back episodes and transcripts. The Brain Science Podcast Mobile App is FREE. It is a great way to consume both free and premium content (since this will not appear in iTunes or other podcasting apps).

  • Please share your feedback about this episode by sending email to brainsciencepodcast@gmail.com or going to the Brain Science Podcast Discussion Forum at http://brainscienceforum.com. You can also post to our fan pages on Facebook or Google+. I am looking for help with these community pages so please email me at brainsciencepodcast@gmail.com if you are interested.

Brain Science Podcast Celebrates 8 Years of Neuroscience

Ginger CampbeLL, host of the Brain Science Podcast (L>R: Greta, Rusty, & Jake)

Ginger CampbeLL, host of the Brain Science Podcast (L>R: Greta, Rusty, & Jake)

The first episode of the Brain Science Podcast appeared on December 5, 2006, which makes it one of the longest running shows in any genre, not just science or medicine. I am especially proud of the fact that we have reached listeners in 219 different countries. BSP 114 is our 8th annual review episode and as a part of our year-end celebration all previous annual review episodes have been added to the FREE feed that also includes our most recent 25 episodes.

The goal of our annual review episode is to highlight some of the key ideas that we have explored during the last years. For 2014 this included discussions of brain plasticity with Dr. Michael Merzenich, the integration of cognition and emotion with Dr. Luis Pessoa, the science of sleep with Dr. Penny Lewis, the hazards of neuromaniaconsciousness with Dr. Michael Graziano, exercise and the brain with Dr. John Ratey, neurobiology with Dr. Frank Amthor, and mirror neurons with Dr. Greg Hickok. We ended the year with highlights from the event "Neuroplasticity and Healing," which featured the Dalai Lama and three previous Brain Science Podcast guests.

BSP 114: 8th Annual Review
Ginger Campbell, MD

How to get this episode:

  • FREE: audio mp3 (click to stream, right click to download)

  • Download FREE Episode Transcript

  • Premium Subscribers have unlimited access to all old episodes and transcripts.

  • New episodes of the Brain Science Podcast are always FREE. All episodes posted after January 1, 2013, are free. See the individual show notes for links the audio files.

2014 Episodes:

 

 

What Do Mirror Neurons Really Do? (BSP 112)

Greg Hickok, PhD (Click on photo to hear his interview)

Greg Hickok, PhD (Click on photo to buy mp3)

Ever since their chance discovery back in 1992 mirror neurons have captured the imagination of both scientists and nonscientists, but their actual role remains mostly speculative. In The Myth of Mirror Neurons: The Real Neuroscience of Communication and Cognition Dr. Gregory Hickok (UC-Irvine) explains why the most popular theory is probably wrong. He also provides a fascinating account of how science is really done and the sobering lesson that scientists can fall prey to the same cognitive biases (and tendencies toward laziness) that plague all humans.

I first discussed the discovery of mirror neurons back in BSP 35 when I featured  Mirrors in the brain: How our minds share actions, emotions, and experience (2008) by Giacomo Rizzolatti and Corrado Sinigaglia. At that time what I found most fascinating was that since mirror neurons fire both when a subject (usually a monkey) performs an action and when a similar action is observed, this proves that single neurons are not necessarily purely motor or purely sensory. This surprising discovery seems to have been overshadowed in the rush to use mirror neurons to explain everything from autism to language evolution.

The latest Brain Science Podcast  (BSP 112) features an interview with Dr. Gregory Hickok. BSP 35 is also available for FREE via the Brain Science Podcast Mobile APP.

 How to get this episode:

References and Links

Related Episodes:

  • BSP 35: introduction to Mirror Neurons (free as an episode extra if you use the BSP mobile app)

  • BSP 39: Dr. Michael Arbib on the possible role of mirror neurons in language evolution (note this interview doesn't represent his current views)

Announcements:

  • Next month's episode will provide exclusive coverage of "Neuroplasticity and Healing" an event being hosted by the Dalai Lama at the UAB School of Medicine.

  • The most recent 25 episodes of the Brain Science Podcast are always FREE. Older episodes and episode transcripts are available for $1 each. Premium subscribers have unlimited access to all 100+ episodes and transcripts.

  • Reminder: The Brain Science Podcast mobile app is now FREE for iOS, Android and Windows Mobile.  Check newer episodes for extra free content!

  • Don't forget to check out my other podcast Books and Ideas.

  • Please share your feedback about this episode by sending email to brainsciencepodcast@gmail.com or going to the Brain Science Podcast Discussion Forum at http://brainscienceforum.com. You can also post to our fan pages on Facebook or Google+.

"Neurobiology for Dummies" (BSP 110)

Frank Amthor, PhD

Frank Amthor, PhD

Frank Amthor's latest book Neurobiology for Dummies isn't just for readers who are new to neuroscience. In this excellent follow-up to his Neuroscience for Dummies Dr. Amthor discusses a wide variety of brain-related topics. Since I have known Frank for several years it was a special treat to interview him for BSP 110. We talked about a wide variety of ideas ranging from what makes neurons special to how brains differ from current computers. 

How to get this episode:

Reference and Links:

Announcements:

Consciousness as Social Perception (BSP 108)

Michal Graziano and Kevin

Michal Graziano and Kevin

In his latest book Consciousness and the Social Brain  Princeton neuroscientist Michael Graziano proposes a unique and compelling theory of consciousness. He proposes that the same circuits that the human brain uses to attribute awareness to others are used to model self-awareness. He emphasizes that his attention schema theory is only tentative, but it is testable and it does fit our current knowledge of brain function.

In a recent interview for the Brain Science Podcast (BSP 108), Graziano used the following clinical example to clarify his approach. A colleague had a patient who was convinced that he had a squirrel in his head. When confronted with the illogic of his claim the patient replied “Not everything can be explained by science.” In this example it is clear that the squirrel doesn’t really exist, so the question to be answered is HOW did his brain reach the conclusion that it does.

How to get this episode:

While imagining one has a squirrel in one’s head is thankfully rare, we also know that our subjective experiences of the world are not necessarily accurate. Our perception of the world is shaped by how our brain processes the sensory inputs it receives. For example, we perceive white light as an absence of color even though in reality it consists of all wavelengths.

Perception is something our brains do constantly and which we can not consciously control. In considering awareness (and by extension consciousness) perception-like Graziano is emphasizing several important features. The most important is probably the fact that it is only “quick and dirty model” of what is really going on, which means that our intuitions about consciousness are not necessarily reliable. In fact, humans have a strong tendency to over-attribute awareness to the world around us. This is part of the social circuitry that has made us the most successful species in the earth’s history, but it can also lead to amusing results (as anyone who has interacted with Siri on an iPhone has no doubt observed).

Another implication of considering awareness as a form of social perception is that it reverses the usual approach taken to understanding consciousness. Instead of asking how a physical brain can produce something subjective and non-physical called consciousness, we ask what kind of information processing leads to the conclusion that I (or anyone else) is conscious. As Graziano points out, this is a “mechanistic” model. Not only can it be tested but it has interesting implications. Dr. Graziano concluded that one of the key implications is "that awareness and consciousness are tools for information processing, and they are mechanistically understandable, and presumably can be engineered.”

I find the attention schema theory to be very compelling. Besides being testable, it has a simple elegance that I appreciate. It also explains why most humans experience a world filled with spirits, and are utterly convinced that their own consciousness is something special and non-physical.

Related Episodes:

Since understanding consciousness is one of the deepest questions facing neuroscience, it has been explored on many previous episodes of the Brain Science Podcast. Rather than list all those episodes I want to mention just a few that I think are particularly relevant to this month’s episode. 

Announcements:

Sleep Science with Penny Lewis (BSP 107)

Penny Lewis

Penny Lewis

In The Secret World of Sleep: The Surprising Science of the Mind at Rest Dr. Penelope A. Lewis provides a highly readable account of the fascinating world of sleep research. Fascinating research is being carried out with animals as varied as fruit flies and rats, as well as with humans. I was surprised to learn that most people actually find it fairly easy to fall asleep in an fMRI scanner.

I have just posted an interview with Dr. Lewis (BSP 107) that includes a discussion of the role of sleep in memory as well as interesting findings about how synapses in the brain actually change during sleep. We still don't know exactly what sleep (and dreaming) are essential, but research in this field is growing. Dr. Lewis is excited about emerging research that suggests improving slow wave sleep may significantly improve learning and memory.

How to get this episode:

  • Buy Audio MP3 for $2.

  • Buy Episode Transcript for $1.

  • Premium Subscribers now have unlimited access to all old episodes and transcripts.

  • New episodes of the Brain Science Podcast are always FREE. All episodes posted after January 1, 2013, are free. See the individual show notes for links the audio files.

Listen in your Favorite Audio app: Audible, Amazon music, Pandora, Spotify, YouTube and many more.

References:

Announcements:

  • Dr. Campbell has been invited to speak at The Amazing Meeting 2014, which will be held in Las Vegas July 10-13. This year's theme is Skepticism and The Brain. Stay tuned to learn more.

  • It will soon be possible to gain CE credit for selected episodes of the Brain Science Podcast.

  • Listener John Richards has relaunched is excellent Neuroscience Glossary at http://richardsonthebrain.com. This is a great place to learn more about terms and ideas that you hear on the Brain Science Podcast.

  • Please post your comments about this episode in our Goodreads Group at http://brainscienceforum.com or send email to brainsciencepodcast@gmail.com.

"The Cognitive-Emotional Brain" (BSP 106)

Luiz Pessoa of the University of Maryland

Luiz Pessoa of the University of Maryland

In The Cognitive-Emotional Brain: From Interactions to Integration neuroscientist Luiz Pessoa argues that emotion and cognition are deeply intertwined throughout many levels of the brain. In a recent interview (BSP 106) Pessoa and I focused on recent discoveries about the amygdala and Thalamus that challenge traditional assumptions about what these structures do. The amygdala processes more than fear (and other negative stimuli) and the Thalamus is more than  a mere relay station.

This a fairly technical discussion but Pessoa did a good job of making the material accessible to all listeners. The reason I think these concepts matter is that not only do they challenge overly simplistic notions of how the brain works, but they also challenge our tendency to see emotion and cognition as separate and often opposing processes.

How to get this episode:

References and Additional Reading

Related Episodes

Announcements

Brain Plasticity with Michael Merzenich (BSP 105)

Michael Merzenich

Michael Merzenich

If you have read anything about brain plasticity you have seen the name Michael Merzenich. Dr. Merzenich is one of the pioneers in this field, having spent over 30 years documenting that the human brain (and that of other mammals) continues to change throughout life. I interviewed Dr. Merzenich several years ago (BSP 54), but the publication of his first book Soft-Wired: How the New Science of Brain Plasticity Can Change Your Life gave us another opportunity to talk about how we can apply these discoveries in our daily lives.

According to Dr. Merzenich, "No matter how much you've struggled, no matter where you've been in your life, you're in charge of your life going forward.  And you have the capacity; you have the resources to change things for the better—always have that capacity.  And that's what the book is trying to emphasize. “ (BSP 105)

I found Soft-wired very compelling because it combines a clear explanation of the science with many stories about real people facing a wide variety of cognitive challenges. The overall tone of the book is very optimistic even though it also considers the way bad choices can contribute to cognitive decline. 

How to get this episode:

Related Episodes:

  • BSP 10: Introduction to Brain Plasticity.

  • BSP 17: Discussion of The Wisdom Paradox: How Your Mind Can Grow Stronger As Your Brain Grows Older by Elkhonon Goldberg.

  • BSP 28: Interview with Dr. Norman Doidge, author of The Brain That Changes Itself.

  • BSP 33: Interview with Dr. John Ratey, author of Spark: The Revolutionary New Science of Exercise and the Brain.

  • BSP 54: Interview with Dr. Michael Merzenich, author of Soft-wired.

  • BSP 87: Interview with Dr. Pam Greenwood, co-author of Nurturing the Older Brain and Mind.

Further Reading:

2013 Neuroscience Highlights (BSP 104)

Ginger Campbell with Rusty and Greta

Ginger Campbell with Rusty and Greta

Its time for the Brain Science Podcast's seventh annual review episode. In 2013 we had the chance to talk with ten scientists, including three returning guests. We also celebrated our 100th episode and passed 5 million downloads.

BSP 104 is a review of some of the key ideas we explored in 2013. I also announced the launch of a new Premium Subscription program. Beginning around December 30 the twenty-five most recent episodes will remain free while the rest of the 100+ podcasts and transcripts will be available either by subscription or for individual purchase. 

Click here to learn more about our new Premium Content.

BSP 104 Year-end Review Episode
Ginger Campbell, MD

How to get this episode:

  • FREE: audio mp3 (click to stream, right click to download)
  • Buy Transcript for $1.
  • Premium Subscribers now have unlimited access to all old episodes and transcripts.
  • New episodes of the Brain Science Podcast are always FREE.  All episodes posted after January 1, 2013, are free.  See the individual show notes for links the audio files.

2013 Episodes and Books

Announcements

Send feedback to Dr. Campbell at brainsciencepodcast@gmail.com.