PSYB65H3 Lecture 7: Lecture 07.docx

• School: UTSC
• Department: Psychology
• Course: PSYB65H3
• Professor: Zachariah Campbell

Document Summary

Sehar qureshi: what we experience all the time are arguably illusions, because it is all taking place in your head, and the external world is not a perfect representation of what we experience. So much processing is required to yield what is experienced internally. Sensation is the registration of physical stimuli by the environment by the sensory organs themselves. Perception is the subjective interpretation of sensations by the brain. Visual light: visible light is the range of the very wide electromagnetic spectrum, which is limited to below. Vision: light waves come in and focus on the surface of the retina. Peak sensitivity graph - shows the s cone, which absorbs light within 419 nm, and as this point increases, their activity decreases. Photoreceptors contain pigments, each different cone has different pigments. In this sense, a pigment can be thought of as something that has the capability to resonate with different wavelengths of light.