Arrange the following steps of mechanism of vision in order.

(1) Light induces dissociation of the retinal from opsin.

(2) Change in the structure of opsin.

(3) Change in membrane permeability.

(4) Potential differences are generated in photoreceptor cells.

(5) Generation of AP is ganglion cell through bipolar cells.

(6) AP is transmitted via optic nerve to visual cortex.

(7) At visual cortex, nerve impulses are analysed and the image formed on retina is recognized

based on the earlier memory and experience.

(8) Focusing of visible light on retina.