Almost everything we do relies on our sense of touch, from simple household chores to navigating potentially dangerous terrain. Scientists have long been curious about how the touch information we obtain with our hands and other parts of our bodies makes its way to the brain to generate the sensations we feel.

However, key aspects of touch, such as how the spinal cord and brainstem are involved in receiving, processing, and transmitting signals, remain unknown.

Now, two studies from Harvard Medical School researchers provide significant new understandings of how the spinal cord and brainstem contribute to the sense of touch.

Summary: Remote fear memories, or memories of trauma formed in the distant past, are stored in the connections between neurons in the prefrontal cortex.

Source: UCR

A remote fear memory is a memory of traumatic events that occurred in the distant past—a few months to decades ago. A University of California, Riverside, mouse study published in Nature Neuroscience has now spelled out the fundamental mechanisms by which the brain consolidates remote fear memories.

Severing the lower part of the vagus nerve that connects the brain and gut led to less myelin loss in a mouse model used to study MS.

WASHINGTON (AP) — Now you see them, now you don’t.

Some frogs found in South and Central America have the rare ability to turn on and off their nearly transparent appearance, researchers report Thursday in the journal Science.

During the day, these nocturnal frogs sleep by hanging underneath tree leaves. Their delicate, greenish transparent forms don’t cast shadows, rendering them almost invisible to birds and other predators passing overhead or underneath.