Well it looks like what my head felt like last friday night, but I'll have a guess that is some sort of ESC thingy.
Nope, someone else says it looks like a terminator's brain with bits of hair still on it where it was cut from the scalp.
I would like to say I know but just looking at it, I have no idea! If I had to take a guess I would have said some form of flight telemetry module, though I imagine I'm quite far off with that guess