Currently browsing "Motor System"
We like to think of ourselves as rational creatures, absorbing information, weighing it carefully, and making thoughtful decisions. But, as it turns out, we’re kidding ourselves. Over the past few decades, scientists have shown there are many different internal and external factors influencing how we think, feel, communicate, and make decisions at any given moment. One particularly powerful influence may be our own bodies, according to new research reviewed in the December issue of Current Directions in Psychological Science, a journal of the Association for Psychological Science. ... More>
When you see a picture of a hand, how do you know whether it’s a right or left hand? This “hand laterality” problem may seem obscure, but it reveals a lot about how the brain sorts out confusing perceptions. Now, a study which will be published in a forthcoming issue of Psychological Science, a journal published by the Association for Psychological Science, challenges the long-held consensus about how we solve this problem. “For decades, the theory was that you use your motor imagination,” says Shivakumar Viswanathan, who conducted the study with University of California Santa Barbara colleagues Courtney Fritz and Scott T. Grafton. Judging from response times, psychologists thought we imagine flipping a mental image of each of our own hands to find the one matching the picture. These imagined movements were thought to recruit the same brain processes used to command muscles to move—a high-level cognitive feat. ... More>