To realize it, the brain knows

2008/07/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

• Biologia
• Anatomia/Fisiologia

The brain makes the decisions 10 seconds before one approaches. This has been demonstrated by the neurologists of the Max Planck Institute in a study published in the journal Nature Neuroscience.

The study involved 14 volunteers. Each participant had two buttons to choose from and at the height of the eyes a screen showed a succession of letters. When they wanted, they had to press one of the two buttons, the one on the right with the right hand, and the one on the left with the left, to remember the letter they had in front of their eyes when making the decision.

During the experiment, the researchers received images of the brain activity of volunteering. Pressing the button on which side the activity is detected on one side of the brain. Well, the researchers found that the activity began in the brain 10 seconds before becoming aware of the decision. Specifically, the front part of the brain was activated, right at the rear of the front. It seems to be the first place to be activated in decision-making.