Evolution

[Amarok]

well let's start with a definition of sensation 

.

a physical feeling or perception resulting from something that happens to or comes into contact with the body.

a : a mental process (such as seeing, hearing, or smelling) resulting from the immediate external stimulation of a sense organ often as distinguished from a conscious awareness of the sensory process — compare 
b : awareness (as of heat or pain) due to stimulation of a sense organ
c : a state of consciousness due to internal bodily changes 

• asensation of hunger
  

The type of sensation most like the form Bateria would apply would be 

Cutaneous sensations

Sensations on the skin are detected by cutaneous receptors. These receptors may feel sensations such as pain, tickle, cold, hot, soft, and rough. Mechanoreceptors detect light pressure (e.g., caress), vibration, and texture, nociceptors detect strong pressure (e.g., pain), and thermoreceptors detect temperature.

For example, if your dog lightly presses its nose on your leg, mechanoreceptors in your skin will sense the smooth texture of your dog’s nose whereas thermoreceptors will detect its coldness. When a dog bites someone, nociceptors detect the sharp pressure. Astereognosis is the inability to identify an object by touch.

Somatosensory

Somatosensory sensations occur when receptors detect changes on one's skin or within one's body.