Final answer:
The detection of deep pressure and vibration is primarily the function of Lamellar (Pacinian) corpuscles, deep within the dermis or subcutaneous tissue.
Step-by-step explanation:
Deep pressure and vibration are detected by the Lamellar (Pacinian) corpuscles. These mechanoreceptors have encapsulated endings and are found deep in the dermis or subcutaneous tissue. They are distinct from other mechanoreceptors such as Ruffini corpuscles, which sense stretching and sustained pressure, and Tactile (Meissner) corpuscles, which are responsible for the sensation of light touch. The Merkel cells, also known as type I cutaneous mechanoreceptors, are responsible for sensing surface vibrations such as when you drag your finger across a textured surface.