During our recent meeting to discuss animal intelligence, Eve mentioned elephants communicating over large distances by transmitting and receiving low-frequency waves through their skeletons and feet. This was in the context of my question, “Is physical embodiment necessary to higher cognition?” This article and video from KQED show and explain the phenomenon.
Charles Cockell’s The Equations of Life: How Physics Shapes Evolution argues physics sets the boundaries and shape possibilities for what evolution can produce in the universe. Read a review here. Chapter by chapter, he aims his lens at all levels of biological organization, from the molecular machinery of electron transport to the social organisms formed by ant colonies. In each instance, Cockell shows that although these structures might be endless in their detail, they are bounded in their form.
There are some open source and free textbooks online that are good background resources for our group. The British Columbia’s BCCampus OpenEd is a good entry point for discovering free digital textbooks written by higher education faculty. For example, the Social Psychology title touches on several topics we often hit on, such as in-/out-group dynamics. Another good source is OpenStax. If you find other good resources, especially at low or no cost, please share their links.
This article from the Bulletin of The Atomic Scientists site is an interesting overview of Nick Bostrom’s Superintelligence: Paths, Dangers, Strategies. The author rebuts Bostrom on several points, relying partly on the failure of AI research to date to produce any result approaching what most humans would regard as intelligence. The absence of recognizably intelligent artificial general intelligence is not, of course, a proof it can never exist. The author also takes issue with Bostrom’s (claimed) conflation of intelligence with inference…
I wrote on my blog about this development and more generally about the increasing ease with which AI tools can forge convincing media. Go see my creepy 3D face.
Two independent teams of scientists from the University of Utah and the University of Massachusetts Medical School have discovered that a gene crucial for learning, called Arc, can send its genetic material from one neuron to another by employing a strategy commonly used by viruses. The studies, both published in Cell, unveil a new way that nervous system cells interact. https://www.nih.gov/news-events/news-releases/memory-gene-goes-viral
For something a little different to start your weekend, here is a glimpse into one man’s subjective world. He asks himself what consciousness is. He observes, “Life is fear,” yet his mind has found a way to peace. What is the adaptive significance of magical thinking? What is the value of cozying up to ambiguity? CUCLI from Xavier Marrades on Vimeo.
Tony Zador of Cold Spring Harbor Laboratory devised a new technique for mapping connections among neurons. It is much faster than other methods and at least as accurate as the most accurate competing methods, including fluorescence techniques. The technique, MAPseq, uses genetically modified viruses to insert unique RNA sequences (“bar codes”) into each neuron. Post-mortem DNA sequencing identifies connections among all neurons in the sample. The resulting model is structural, not functional. Derived models are not spatially accurate (i.e., not…
Neural learning occurs at dendrite roots, not in synapses. The newly suggested learning scenario indicates that learning occurs in a few dendrites that are in much closer proximity to the neuron, as opposed to the previous notion. … The new learning scenario occurs in different sites of the brain and therefore calls for a reevaluation of current treatments for disordered brain functionality. … In addition, the learning mechanism is at the basis of recent advanced machine learning and deep learning…
“This is the first time scientists have been able to identify a patient’s own brain cell code or pattern for memory and, in essence, ‘write in’ that code to make existing memory work better, an important first step in potentially restoring memory loss” … “We showed that we could tap into a patient’s own memory content, reinforce it and feed it back to the patient,” Hampson said. “Even when a person’s memory is impaired, it is possible to identify the…