That is right!
The same for sadda rupa. External sounds are captured by the ears, that signal processed by the brain, and sent to sota pasada rupa as a sadda rupa.
The same for rasa rupa. Taste of food is captured by the tongue, that signal processed by the brain, and sent to jivha pasada rupa as a rasa rupa.
The same for gandha rupa. A smell is captured by the nose, that signal processed by the brain, and sent to ghana pasada rupa as a gandha rupa.
The same for pottabba rupa. A touch is captured by the body (skin), that signal processed by the brain, and sent to kaya pasada rupa as a pottabba rupa.
The same for dhamma rupa. That a little bit different. For example, a memory comes to the mana indriya in the brain (which has not been identified by science yet), that signal processed by the brain, and sent to hadaya vatthu (in one’s mental body).
– It is to be noted that the first five signals (cakkhu, sota, ghana. rasa, pottabba) are also “seen” by the hadaya vatthu, which is the “seat of the mind.”
– In the mental body (gandhabba), five pasada rupa are located around the hadaya vatthu (seat of the mind). Thoughts (citta) arise in the hadaya vatthu. When a signal comes to a given pasada rupa (say cakkhu pasada), it makes contact with the hadaya vatthu. That is actually how the contact (phassa) is made.
More details at: “Brain – Interface between Mind and Body“.