It looks like dream paralisys. I wrote a lot of lines about this but It got erased and I'm too lazy to write it again... Sorry. :/ When you're in paralisys you can not move, looks like you can't breath too but it's not true it's only feeling however you've got hallucinations that time and usually it accompanied with powerless feeling and fear. Hmm... On my example I hear storm, lighting and high screech. Other people can feel like their falling or something is attacking them(usually man or monster is stifling them). I guess everything I didn't check.