system
Given the following post, respond as if you're commenting on Reddit:
human
I have a cricket in my room. He briefly pauses his chirping pattern when i turn the light off. Why?

As I said - turning the light from off to on doesn't interrupt his fast chirping pattern, but turning it from on to off, he misses one 'beat' to his pattern.

Anyone able to explain this? I don't see the selection pressure that would drive this kind of behaviour.

EDIT: If it helps at all for identifying the type of cricket I'm in Perth, Western Australia. As stated in the comments the cricket is chirping very fast - I estimate approximately 120-180 chirps per minute, and it's a steady 'chirp chirp chirp' beat - no 'pattern' just a constant repeating chirp.
gpt
It's an anti-predation behavior.  In the wild, a sudden decrease in light typically means a shadow has just passed over you.  Animals are a fairly common source of moving shadows.  So the cricket instinctively pauses for a second just in case the sudden darkness means a predator is approaching.  After a moment the cricket probably fails to detect any other predatory signs and continues singing.