Question

Why can’t the human body sense magnetic fields in our bodies when neurons “fire”

Answer 1

Why can’t the human body sense magnetic fields in our bodies when neurons “fire”

We know that, neurons is an impulse conducting cell. Such cells are found in the brain, spinal column and nervous system. Humans have a magnetic sensor in our eyes, but we can't detect a magnetic fields. The current consensus is that humans cannot sense magnetic fields.

In the 1980s, Robin Baker from the University of Manchester carried out a series of experiments which seemed to show that humans could sense a magnetic fields. He said, "Whatever the repercussions, we have no alternative but to take seriously the possibility that Man has a magnetic sense of direction".

Humans have two cryptochromes such as CRY1 and CRY2 which helps to control our body clocks.

Human cryptohrome can act as a 'magnetic sensor'. This does not mean that it does, much less that humans can sense a magnetic fields. To sense the magnetic field, one does not only need a molecule like cryptochrome, but also an apparatus that picks up the changes in that molecule and mediates it to the brain.

The magnetic sense could sit anywhere in a body, because the magnetic field penetrates the body. Apparently the human body is a dynamic, ever-changing bioelectric and biomagnetic organism.

Biomagnetics deals with the study of body’s own magnetic fields. These fields are extremely weak and only detectable with highly sensitive instruments like magnetoencephalograph (MEG) and magnetocardiograph (MCG) that blocks out all external magnetic fields which including the Earth’s magnetic field.