What came first ? The sound or the thought

[mapuc]

As some of you may know, I have a little female cat. She likes to come out.

Ok here's the story

It was about 7 in the evening, my cat wanted to come outside, I let her out.

One hour later I was in my kitchen to get something, while I was there I looked at the windows to see if she was sitting outside, she wasn't.

9 o´clock I was again in the kitchen to get some coffee, looked at the windows no cat.

This worried me a little ´cause she doesn't use to be out so long when it's late autumn or winter.

Maybe she have taken one of her long walk around the town.

Went back to the living room and watch tv and used the internet.

I didn't had a thought about my cat for a long time when I suddenly

came to think on my cat

and at the same time I could hear here outside.

Went into the kitchen and opened the window so she could come in.

While I was carrying her into the living room, I came to think of what just happened and I start wondering.

Was it the sound of my cat, that triggede my brain to get me to think of my cat ?
Or
Was it my suddenly thinking on the cat, that triggede my ears to hear the cat ?

Markus