Chapter 4 : Sensation and Perception

A thin membrane that contains the sensory receptors where transduction takes place.

• Pupil

• Retina

• Fovea

• Rods

Point of central focus on the retina, contains only cones.

• Pupil

• Retina

• Fovea

• Iris

Photoreceptors that are sensitive to low levels of light, allow us to see at night.

• Pupil

• Retina

• Fovea

• Rods

A hole in the middle of ring-shaped muscle (iris) that can expand and contract to regulate the amount of light that enters the eye.

• Pupil

• Retina

• Fovea

• Rods

Which of the following is TRUE.

• Rods are important for colour vision.

• Cones are not important for detail.

• Common disorders of vision are myopia, cataract, glaucoma, presbyopia and hyperopia.

• Ganglion cells receives data from a hundred or more cones, integrating the data into one signal

The retinal area where the optic nerve exits.

• Blind spot

• Optic nerve

• Ganglion cells

• Optic chiasm

Point at which some nerve fibers from each eye cross to the other hemisphere of the brain, and some nerve fibers remain on the same side of the brain.

• Optic nerve

• Optic chiasm

• Blind spot

• Ganglion cells

Theory that suggests that colour vision results from the action of three different types of cones.

• Trichromatic theory

• Retinex theory

• Opponent-process theory

• Colour vision deficiency

Theory that suggests that ganglion cells respond to neural signals in terms of opposing (on-off) pairs of colours.

• Trichromatic theory

• Retinex theory

• Colour vision deficiency

• Opponent-process theory

Theory that suggests that the cerebral cortex compares colour information from various parts of the visual fields.

• Trichromatic theory

• Colour vision deficiency

• Opponent-process theory

• Retinex theory