Sensation and Perception Flashcards
Sensation
The process by which our sense organs and receptors detect and respond to sensory information
- Automatic
- Involves Physiological structures only
- Is the same for everyone
Perception
The process of giving meaning to sensory information, resulting in our personal interpretation of that information.
- Is automatic
- Involves both psychological and physiological processes
- Is an active process
- Unique
Cornea
Protects the front of the eye and helps to focus light onto the retina.
Aqueous Humour
Watery fluid between the cornea and the pupil that helps maintain the shape of the eyeball and provide nutrients and oxygen to the eye.
Iris
Ring of muscles that alter the shape of the pupil to regulate the amount of light entering the eye
Pupil
Opening in the middle of the iris that lets light into the eye
Lens
Focuses light onto the retina, adjusting its shape based on the distance to the object being viewed
Ciliary Muscle
Contract or relax to change the lens’ shape so it can focus light.
Vitreous Humour
Helps maintain shape of eyeball and helps focus light onto the retina.
Retina
Layer of photoreceptors at the back of the eye that detect light waves and convert them into electrochemical energy
Rods
- About 100 million
- Mostly peripheral
- More sensitive to dim light
- See in black and white
- Less detailed
Cones
- Around 6.5 million
- Mostly central vision
- Work better in bright light
- Produce colour
- Pick up fine details
Visual/Gustatory Perception Process
Reception, Transduction, Transmission, Interpretation
VP Reception
The light travels through the cornea, and is bent by the lens onto the retina where the photoreceptors detect and respond to it
