Biomimicry

Notes from Bioengineering Conference, Nov 25, Long Beach, CA

I like to follow developments that are the result of ‘biomimicry’. Then again, I’m weird like that. However, I think it’s something that merits attention. Biomimicry is the practice of overcoming obstacles by seeing what works in nature. Naturalistic observation is just as valid as ‘laboratory observation’ in science. According to the speakers today, discovering how things work in nature has inspired breakthroughs in computer technology, renewable energy and regenerative medicine, just to name three.

Renewable energy: Biologists observing the motion of humpback whales have found more efficient ways to capture energy from the wind. They noticed how the saw-tooth bumps (tubercles) that line the edge of a whale’s fin help them perform better in slow-moving water. When they line the edge of blades on a wind-turbine with similar bumps; the blades rotate faster in response to slow-moving wind. This has led to the installation of more efficient and lower-profile ‘wind-mills’ in the desert outside of Palm Springs.

Regenerative medicine: Psychologists observing the natural development of language have made contributions to the field of regenerative medicine. They saw how children learn grammar as a result of social interaction ..with little or no coaching. When they simulate the social environment of early childhood; stroke victims make faster progress toward recovering language skills. This has led to the design of training-programs, hosted as video games ..that are more interactive and engaging. Results can be seen in speech performance as well as on MRI scans of the brain.

Closing remarks: Geoffrey Spedding, an engineer from USC, talked about limits to what we can learn from nature. He says “… the designs that come through evolution are just good enough to survive, that’s all. Nature has yet to come up with a decent wheel.” I had to disagree. In my humble opinion, evolution did produce an information-processing device capable of infinitely more ..the human brain. So, however indirect ..nature did invent the wheel.

Applied neuroscience

Brain surgeon Wilder Penfield [link] found that whenever he tugged at one place in childhood memory, he pulled the rest of childhood experience with it. His patients would report : “I can hear the sound of my mother’s voice calling me for dinner ..I smell the scent of fresh baked bread like I did then ..I see my mother waiting for me on the porch .. I feel her warmth ..I actually feel like I did as a child right now.” Psychologists see the same thing going on with their clients while they’re talking about present-day relationships. For example, when they report talking to somebody who has a voice or manner similar to one of their parents ..it often triggers the feelings they experienced in the presence of that parent. Could be feelings of warmth and pleasure ..or feelings of intimidation and submission. They may pass through these states during the day without even knowing it. What they do remember, however, is a feeling that tells them whether or not they enjoy someone’s company.

My first boss, Tony, was a commanding presence. He looked like a mafia don ..with a deep baritone voice and a quick temper. He shouted at people a lot and often in a disparaging manner. He intimidated my colleagues, which made them cringe in his presence. For some reason his behavior didn’t bother me. I even got a chuckle out of it. I think I figured out why ..and I believe I owe it to Dr Penfield. Although my father didn’t live with us very long, what I remember about him most is that he was gentle and reasonable. He would explain things I did wrong and never scolded. I don’t have memories of growing up with a ‘bully’ like many of my colleagues. Consequently, Tony didn’t evoke the same feelings in me as he did in them. I always figured there was a method to his madness and he always treated me with civility, while my colleagues always felt like they were getting a whipping.