PSYB51H3 Chapter Notes - Chapter 2: Membrane Potential, Lateral Geniculate Nucleus, Receptive Field
Document Summary
The first steps in vision: from light to neural signals. Wave: an oscillation that travels through a medium by transferring energy from one particle or point to another without causing any permanent displacement of the medium. Photon: a quantum of visible light or other form of electromagnetic radiation demonstrating both particle and wave properties. Absorb: to take up something such as light, noise, or energy and not transmit it at all. Scatter: to disperse something such as light in an irregular fashion. Figure 2. 1: the spectrum of electromagnetic energy (specified in nanometers), with the visible spectrum (400-700 nm) expanded at right. Reflect: to redirect something that strikers a surface especially light, sound, or heat usually back toward its point of origin. Transmit: to convey something (e. g. , light) from one place or thing to another. Transparent: allowing light to pass through with no interruption, so that objects on the other side can be clearly seen.
