How fetuses react to face-like Images from the womb

Researchers projected light through the uterine wall of pregnant mothers, and discovered that fetuses at 34 weeks gestation will turn their heads to look at face-like images over other shapes.

The researchers tested the responses of 39 fetuses to face-like patterns of light presented to them in both upright and inverted pattern.

The projected light moved across their field of vision while researchers watched the fetuses' reactions using 4D ultrasound.

 The result showed that the developing babies turned their heads to look more often at face-like stimuli that were upright than those that were presented to them upside down.

The findings also confirm that fetuses have enough light to see and have visual experiences in the womb.

          haleplushearty.blogspot.com

How your brain detects diseases in others

Human sense of vision and smell can detect a disease before it breaks out, and make us avoid sick people.

Researchers injected harmless bacteria on participants and activated the immune response in another participants, who developed the classic symptoms of disease.

Symptoms like tiredness, pain and fever for a few hours, they were photographed and filmed. The injected substance and symptoms then disappeared from their bodies.

Another group of participants were exposed to the images and asked to rate how much they liked the people, while their brain activities were measured in an MR scanner.

They were  asked to look at the photographs and identify sick and healthy participants.

The result shows that brain is good at picking weak signals from multiple senses relating to a person's state of health. Avoidance does not apply if
you have close relationship with the sick person.