Final answer:
The sensation of becoming unaware of clothes on the skin over time is known as sensory adaptation, where sensory receptors decrease their response to unchanging stimuli.
Step-by-step explanation:
The phenomenon of becoming unaware of the sensation of clothes on the skin after some time represents sensory adaptation. This occurs when our sensory receptors become less sensitive to unchanging stimuli over time. For instance, when you first put on your clothes, you may feel the fabric against your skin, but as time goes on, that sensation fades and you no longer actively notice it. This is different from habituation, which is a form of learning where an organism reduces its responses to a frequently encountered, non-harmful stimulus. Habituation might occur in a context where you get used to the background noise of a television while reading a book, and eventually, the sound no longer distracts you.