THE EVOLUTION OF SYMBOLS (re-posted from April, 2018)

Filed under: Evolution of Emotion, Human Nature, Sexual Selection | No Comments

When Science places a finding on their cover, it usually means that it is significant, which is indeed the case with the article by D.L. Hoffmann, et al. Entitled “U-Th dating of carbonate crusts reveals Neandertal origin of Iberian cave art.” A relatively new method of dating utilizing the carbonate drip-precipitated coating overlying the art …

Read More
Opposable Thumb

Opposable Thumb

Filed under: Brain evolution, cognitive capacities | No Comments

by Pamela J. Hines (Science  23 Apr 2021:Vol. 372, Issue 6540, pp. 357) Hand bones of australopithecine hominid fossils dated to over 2 million years ago have a long, slender thumb that may have added dexterity. Karakostis et al. add muscle to the story of hand evolution with their analysis of torque at the thumb …

Read More
Brain Evolution

Evolution of the Brain

Filed under: Brain evolution | No Comments

Numbers indicate Brodmann’s areas BC: Brodmann’s cap LA: lambdoid suture In humans, evolutionary expansion of the inferior prefrontal cortex (IPF) resulted in a shift of the pci toward the posterior side of CO (red arrowheads). Concomitant expansion of the parietal bone resulted in anterior shift (blue arrowheads) of the apical portion of CO. In humans, …

Read More
Image of the mnd

The Function of Dreams

Filed under: Mind | 1 Comment

They maintain that dreams, rather than merely repeating the events of the day to cement them into long-term storage, allow our brains to freely explore memories that have been filed away over time, extracting information and developing a narrative based on associations.

Read More