Week 4: Sensation and Perception Flashcards
True or False: Perception is easy and direct/
False
True or False: Perception happens in the brain, not the eyes
True
What is the difference between sensation and perception?
sensation: the environment stimuli hitting the sensory organs vs perception: when the brain interprets the signals to form a representation of the enviorment
What is the difference between sensation and perception?
sensation: the environment stimuli hitting the sensory organs vs perception: when the brain interprets the signals to form a representation of the environment
What are the 5 senses?
vision, taste, smell, touch, and auditory
What are other types of senses, like in animals?
echolocation, thermal change, electrical fields
The visual system uses what to gather information about the enviornment?
light waves
What colors represent short and long wavelengths?
short: purple or blue, long: red
The brightness/ intensity of light is determined by what?
wave height
What are the 4 steps of seeing?
- Light hits eyes
- Lens sends light to retina (photo receptors)
- Transduction happens at retina
- Information goes to brain to be interpreted
What is transduction?
When sensory signals (light, pressure, sound, etc) is translated into electrical signals
The retina is covered in what cells?
photoreceptors
In our blind spot, there is no what?
photoreceptors
Rods and cones are in the what?
retina
Rods see in what while cones see in what?
grayscale and low acuity; color and high acuity