PSY 1001 Lecture Notes - Lecture 7: Max Wertheimer, Gestalt Psychology, Olfactory Bulb
7 Jun 2018
School
Department
Course
Professor
Chapter 4: Your Senses Part 1
• Background
o Sensation: the immediate, basic components of a sense experience
o Perception: organization of sensation components into a recognizable form,
object, or event
o Two Main Processes
▪ Bottom-Up= initiated by the stimulus input
• Sensation
• Data driven
▪ Top Down= initiated by prior expectation or belief
• Perceptions
• Knowledge driven
o Top-Down Processing is most important when
▪ We have strong experiences
▪ The situation is familiar
▪ The stimulus information is weak or ambiguous
o Bottom-Up Processing is most important when
▪ The situation is unfamiliar (we have no recent knowledge)
▪ The stimulus is clear and unambiguous
• Transduction
o Process by which a sensory information turns into relay information
o Each sense has its own transduction process
▪ Breaks down info
▪ ALWAYS uses neurons to relay info to the brain
o Every sense starts with a stimulus
o Stimulus= external and physical
o Physical Stimuli:
▪ Taste (gustation): food chemicals
▪ Vision: photons of light
▪ Hearing (audition): sound waves
▪ Touch (somatosensation): pressure and temperature
▪ Smell (olfaction): air chemicals
o Process differs for each sense
• Your Senses
o Taste (Gustation)
▪ Physical Stimulus: food Chemicals
▪ Transduction:
• Chemicals dissolve in saliva
• Move into the fungiform papillae
• Papillae contains taste buds
o Neurons that respond to food chemicals
o Prefer one flavor and fire to one flavor
o
find more resources at oneclass.com
find more resources at oneclass.com
