Scientists may have solved the mystery of how human hands became nimble enough to make and manipulate stone tools.

child & chimp cooperation

Chimps and apes are genetically so similar to humans - and their human-like gestures do remind us how close we are on the family tree - that scientists have long been puzzled why they don't live as long as we do. Diet-related evolutionary changes may explain it.

Hawks provides a brief summary/commentary of the PBS Human Spark, ep. 1

18 November 2006 - New Scientist

Those of us who are critical of evolutionary psychology (EP) are often accused of being anti-evolution and/or anti-psychology. Many of us are neither. That's because evolutionary psychology isn't really evolution and it isn't really psychology.

Do apes and monkeys have a secret language that has not yet been decrypted? And if so, will it resolve the mystery of how the human faculty for language evolved? Biologists have approached the issue in two ways, by trying to teach human language to chimpanzees and other species, and by listening to animals in the wild.

Why You Are Not Your Brain, and Other Lessons From the Biology of Consciousness

Duke University anthropologist Steven Churchill presents his research on the evolutionary origins of projectile weaponry, and how weapon use changed interactions between humans and other species-including, perhaps, the Neandertals. (October 20, 2009) » American Scientist

It has been suggested that interconnected brain areas evolve in tandem because evolutionary pressures act on complete functional systems rather than individual brain areas. The cerebellar cortex has reciprocal connections with both the prefrontal cortex and motor cortex, forming independent loops with each. Specifically, in capuchin monkeys cerebellar cortical lobules CrusI and CrusII connect with prefrontal cortex, whereas the primary motor cortex connects with cerebellar lobules V,VI,VIIb, and VIIIa. Comparisons of extant primate species suggest that the prefrontal cortex has expanded more than cortical motor areas in human evolution. Given the enlargement of the prefrontal cortex relative to motor cortex in humans, our hypothesis would predict corresponding volumetric increases in the parts of the cerebellum connected to the prefrontal cortex, relative to cerebellar lobules connected to the motor cortex. We tested the hypothesis by comparing the volumes of cerebellar lobules in structural MRI scans in capuchins, chimpanzees and humans. The fractions of cerebellar volume occupied by CrusI and CrusII were significantly larger in humans compared to chimpanzees and capuchins. Our results therefore support the hypothesis that in the cortico-cerebellar system, functionally related structures evolve in concert with each other. The evolutionary expansion of these prefrontal-projecting cerebellar territories might contribute to the evolution of the higher cognitive functions of humans.

Commentary on Ned Block (1995)

What makes us human? There are at least as many answers to this provocative and searching question as there are authors of this compendium. In the various articles you will find suggestions that include the 'spirit of man', referring particularly to religion, speech and not just language, imitation and 'mimetics', cooking, high levels of cognitive ability, causal belief, that humans are symbolic creatures, innate curiosity and the desire to know, mental time travel, and the ability to read other's minds. These all have cognitive ability as a common thread and, deriving from this, high-level development of language and cultural transmission.

'The Pentagon's Small Business Innovation Research (SBIR) program recently sent out a call for contractors to design a pack of robots whose main purpose would be to track down what the SBIR ominously referred to as "noncooperative human subject[s]."' | Media and Technology | AlterNet

"A new study published online in Brain searched for letter-colour synaesthetes in 6-8 year old children and found not only are they relatively common, but that the condition changes as the children grow." (Mind Hacks)

The problem of consciousness is understanding how this world is there for us. It shows up in our senses. It shows up in our thoughts. Our feelings and interests and concerns are directed to and embrace this world around us. We think, we feel, the world shows up for us. To me that's the problem of consciousness. That is a real problem that needs to be studied, and it's a special problem.

"Coined by the late transhumanist Alexander Chislenko, the term "fyborg" is a portmanteau of 'functional' and 'cyborg'. It refers to the utilisation of technological tools external to the body, which is supposedly a more popular notion than having surgery to implant the technology. So, while a cyborg would use a mathematical processing chip implanted into his brain, a fyborg would use a calculator or notebook computer to perform any difficult calculations. A cyborg may have an artificial eye overlaying an interface onto the world, but a fyborg may achieve the same thing by wearing high-tech glasses." (Human Enhancement and Biopolitics)

Artist and researcher Mitchell Whitelaw wrote an interesting and in-depth article on the links between audio-visual fusion art and synaesthesia for the Senses and Society journal. Whitelaw has just put the piece online, has illustrated it with embedded videos of some of the stunning pieces he references, but also discusses the neuroscience of synaesthesia with considerable care and insight. (Mind Hacks)

Robots.net recently featured the Whole Brain Emulation Roadmap (pdf) produced by the Future of Humanity Institute at Oxford University.