PSY312H5 Lecture Notes - Lecture 5: Electromagnetic Radiation, Neural Adaptation, Rhodopsin
Document Summary
Absolute threshold-smallest strength of a stimulus that can be detected. Difference threshold-(jnd) smallest difference that can be detected. Somatosensory has several different types of sensors that are transducing into a neural impulse. Sweet is the #1 taste that gets us going. Electromagnetic radiation into a neural impulse which is electrochemical information. Represents characteristics of objects in our environment such as size, color, shape and location. Two types of receptors: rods-motion and contrast and cones-colour. Inner ear-cochlea filled with fluid has hair cells and move back and worth when the water moves back and forth creates a chemical signal. No-we do not arrive with all of our senses fully functioning. This is yet another area that will develop and mature with the infant. Two months is the critical period for development of visual perception. Right from infancy infants are more interested and perceive patterns more than non-patterns, even though vision is not good can determine patterns vs non- patterns.
