Shining new light on the brain

Vitamin D deficiency: shining new light on the sun nutrient.

Becoming Confident in the Statistical Nature of Human Confidence Judgments

In this issue of Neuron, Sanders et al. (2016) demonstrate that human confidence judgments seem to arise from computations compatible with statistical decision theory, shining a new light on the old questions of how such judgments are formed.

Colour constancy

What is colour constancy? Colour constancy is the tendency of objects to appear the same colour even under changing illumination. A yellow banana appears yellow whether you see it in the tungsten light of the kitchen or in sunlight outdoors. Under these different conditions, the banana reflects very different light spectra to your eyes, but you see instead its unchanging material properties. Th...

Thinking, Recognition and Otherness

There was her body, quiet, used, resting: there was her mind, free, clear, shining: there was the boy and his eyes, seeing what? And ecstasy. Things would hurt when this light dimmed. The boy would change. But now in the sun she recognised him, and recognised that she did not know, and had never seen him, and loved him, in the bright new air with a simplicity she had never expected to know. “Yo...

Effect of light Polarization on the absorption index of alkali metal vapor in optical pumping phenomenon

Recently atomic magnetometers are one of the best tools in biomagnetic measurement such as magnetic field of brain and heart. In this paper, the technology of optically pumped atomic magnetometer based on circularly polarized light absorption pumping is described. We have been investigated a new method for measuring polarization effect in an alkali vapor based on polarized light transmission. I...