Showing posts with label psychology. Show all posts
Showing posts with label psychology. Show all posts

Monday, August 13, 2012

Regrown Phantom Hand

A woman born without a finger and a thumb on her right hand that was subsequently amputated after an auto accident has developed a phantom image of her hand, an experience common for amputees but complete with five fingers and a thumb, suggesting our brain has a fully functional map of our body regardless of its physical condition.

Tuesday, December 13, 2011

Psychopath's Brains Are Different

Diffusion tensor (DFI) and functional magnetic resonance images (fMRI) of prisoner's brains reveal reduced connectivity between the prefrontal cortex and amygdala in persons diagnosed as psychopaths, possibly explaining their callous and impulsive antisocial behavior.

Friday, February 25, 2011

Gaze-Following in Wolves

The ability to follow another's gaze, an important attribute of social animals in collaborative efforts of hunting or survival and a key to understanding intention and attention, has been observed in wolves whereas previously such behavior had only been documented in birds and primates.

Saturday, June 19, 2010

Brain's Distorted Body Model

A hand study reveals the brain's representation and perception of various body parts is highly distorted from the actual proportions, most likely due to the differences in sensory information received from those parts.

Friday, March 19, 2010

Psychopathic Brain Seeks Reward

Psychologists have discovered that the brain of a psychopath contains a hyper-reactive dopamine reward system, one so strong that the quest for reward often overwhelms any potential risks or punishment as well as any social mores.