Here's some info, I dont know if you need to put this in your own words though.
sub·lim·i·nal
/ˌsəbˈlimənl/
adjective: PSYCHOLOGY
adjective: subliminal
(of a stimulus or mental process) below the threshold of sensation or consciousness; perceived by or affecting someone's mind without their being aware of it.
this question was two years ago but oh well if some people look at it now here you go lol