Primary waves travel through Earthâs crust at an average speed. of about 5 kilometers per second (3 mi/s). Primary waves can travel. through solids, liquids, and gases. As they pass through a material, the. particles of the material are slightly pushed together and pulled apart.
Why This Occurs. Emotional detachment is usually an issue caused by severe, intense anxiety - most notably panic attacks, although any form of severe anxiety can cause emotional detachment. While it's not entirely clear what causes this detachment, it most likely is a coping mechanism for the brain.
Cause of Pins and Needles. The feeling of pins and needles is known as paresthesia.. Most people associate it with sleeping incorrectly on a nerve. This causes the nerve to stop sending signals so that it falls asleep and creates a feeling of numbness. When pressure is taken off of the nerve, the body sends shock waves down the nerve to wake it up. This is what creates a feeling of pins and needles.