Scientists Think They’ve Found the Region of the Brain That Regulates Conscious Perception
Published in Brain/Neurology.
A new experiment suggests that the thalamus plays a key role in humans becoming consciously aware of stimuli their brain receives.
A team of scientists has identified areas of the brain that are activated when a person becomes aware of themself and their thoughts. This enigmatic process appears to be controlled by the thalamus, a central region of the brain already known for its function as a filter between sensory signals and the cerebral cortex, the portion of the brain that governs higher-level processes such as memory, thought, and personality.
Conscious perception is the ability of human beings to become aware of the stimuli received by their senses. It is a different state from simply being awake, where sensations are processed automatically and unreflectively. Rather, conscious perception requires a detailed and voluntary analysis of external stimuli. For example, we can breathe automatically, but we can also be aware of our breathing and modify its rhythm. Likewise, when listening to a song, we can pay attention to and differentiate the instruments that compose it.