An example of the difference between perception and conscious perception is shown by Moore and Egeth. They showed participants a display containing two horizontal lines and a series of surrounding dots. In one trial the lines and dots were arranged to produce the Müller-Lyer illusion (an illusion that causes the same two lines to look different in length). In this experiment MOST participants were:

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In this experiment, most participants were not consciously aware of the Müller-Lyer pattern and perceived the two lines to be of different lengths. This shows that perception can occur without conscious awareness or attention to stimuli.

An Example of the Difference Between Perception and Conscious Perception