The Limits of Intelligence Santiago Ramón y Cajal, the Spanish Nobel-winning biologist who mapped the neural anatomy of insects in the decades before World War I, likened the minute circuitry of their vision-processing neurons to an exquisite pocket watch. He likened that of mammals, by comparison, to a hollow-chested grandfather clock. Indeed, it is humbling to think that a honeybee, with its milligram-size brain, can perform tasks such as navigating mazes and landscapes on a par with mammals. A honeybee may be limited by having comparatively few neurons, but it surely seems to squeeze everything it can out of them. At the other extreme, an elephant, with its five-million-fold larger brain, suffers the inefficiencies of a sprawling Mesopotamian empire. Signals take more than 100 times longer to travel between opposite sides of its brain—and also from its brain to its foot, forcing the beast to rely less on reflexes, to move more slowly, and to squander precious brain resources on planning each step.
The left brain knows what the right hand is doing Browse through a list of history's most famous left-handers and you are likely to see Albert Einstein's name. You may even see people tying Einstein's genius to his left-handedness. The problem is, Einstein's left-handedness is a myth. Myriad photos show him writing on a chalkboard with his right hand, for example. But handedness has its roots in the brain—right-handed people have left-hemisphere-dominant brains and vice versa—and the lefties who claim Einstein weren't all that far off.
Fixing Cognitive Distortions Cognitive distortions have a way of playing havoc with our lives. If we let them. This kind of “stinkin’ thinkin’” can be “undone,” but it takes effort and lots of practice — every day. If you want to stop the irrational thinking, you can start by trying out the exercises below. 1. Visual Processing: Cortical Pathways (Section 2, Chapter 15 The visual system is unique as much of visual processing occurs outside the brain within the retina of the eye. The previous chapter described how the light-sensitive receptors of the eye convert the image projected onto the retina into spatially distributed neural activity in the first neurons of the visual pathway (i.e., the photoreceptors). Within the retina, the receptors synapse with bipolar and horizontal cells, which establish the basis for brightness and color contrasts.
6 Possible Roles For Teachers In A Personalized Learning Environment by Justin Marquis, Ph. D There is a mountain of speculation and debate about what school and learning will look like in the near future. Will education be online? Individualized? The Ten Most Revealing Psych Experiments Psychology is the study of the human mind and mental processes in relation to human behaviors - human nature. Due to its subject matter, psychology is not considered a 'hard' science, even though psychologists do experiment and publish their findings in respected journals. Some of the experiments psychologists have conducted over the years reveal things about the way we humans think and behave that we might not want to embrace, but which can at least help keep us humble. That's something.
The Science Of Conquering Your Fears Aristotle believed courage to be the most important quality in a man. “Courage is the first of human virtues because it makes all others possible," he wrote. Today, it's one of the more neglected areas of positive psychology, but recent research has begun to move toward an understanding of what courage is and how we might be able to cultivate the ability to face our fear and make decisions with greater fortitude. Neuroscientists recently determined just how courage works in the brain, finding that a region called the subgenual anterior cingulate cortex (sgACC) is the driving force behind courageous acts -- a conclusion which could one day prove useful in treating anxiety disorders. So how can we train our minds to act more courageously in everyday life?
Anthropologists find American heads are getting larger White Americans' heads are getting bigger. That's according to research by forensic anthropologists at the University of Tennessee, Knoxville. Lee Jantz, coordinator of UT's Forensic Anthropology Center (FAC); Richard Jantz, professor emeritus and former director of the FAC; and Joanne Devlin, adjunct assistant professor, examined 1,500 skulls dating back to the mid-1800s through the mid-1980s.
Current Biology - Separate Processing of Different Global-Motion Structures in Visual Cortex Is Revealed by fMRI Figure 1 A Schematic Description of the Motion Stimuli (A) The subjects viewed a radial-motion, translation-motion, or random-motion stimulus in 16 s epochs. The global-motion types were changed in a random order every 16 s. (B) The translation-motion display consisted of two sets of global motion. In one set, the motion directions of the dots were limited to a 45° range, whereas in the other set, the motion directions of the dots were limited to the opposite 45° range. 10 ways to help students develop a PLN… There has been some discussion lately about the precise meaning of the term PLN. I’m not sure why it matters actually. Like any other word in the dictionary (!), it has more than one definition and might mean different things to different people… My PLN is my ‘personal learning network’. It comprises the people I learn with and from, some face-to-face and others online, around the globe.
10 Brilliant Social Psychology Studies Ten of the most influential social psychology experiments. “I have been primarily interested in how and why ordinary people do unusual things, things that seem alien to their natures.Why do good people sometimes act evil?Why do smart people sometimes do dumb or irrational things?”