Answer:
The initial step of your eyes detecting the black marks on the page depends on the process of _SENSATION_.
Then the ability to organize the black marks on the paper into meaningful patterns involves the process of PERCEPTION.
Explanation:
Sensation is the detection of external or internal stimulation (e.g, ears detecting sound waves). It is different from perception, which is about making sense of, or describing, the stimulation (e.g.,hearing a guitar).
Sensation involves three steps:
1. Sensory receptors detect stimuli.
2. Sensory stimuli are transduced into electrical impulses (action potentials) to be decoded by the brain.
3. Electrical impulses move along neural pathways to specific parts of the brain wherein the impulses are decoded into useful information (perception).
