Astanga yoga of patanjali mentions DHARANA and DHYANA AS 6th and 7th step towards ultimate path of yoga. So here CHITTA and MANAS come in to picture. I get confused here. I think CHITTA and MANAS are two different entity. I can feel my mind. mind is an intangible entity present in us. It is a place where thought process begin, all the sensations are felt and analysed by mind.

Can someone explain me the difference between CHITTA and MANAS with reference to mental process so that i can understand DHARANA AND DHYANA.