Back to AI Flashcard MakerPsychology /Sensation and Perception Part 1
Sensation and Perception Part 1
This deck covers key concepts in sensation and perception, including sensory receptors, perception processes, and visual components such as the retina and photoreceptors.
Sensation
The stimulation of sensory receptors and transmission of sensory information to the central nervous system
Tap or swipe ↕ to flip
Swipe ←→Navigate
1/30
Key Terms
Term
Definition
Sensation
The stimulation of sensory receptors and transmission of sensory information to the central nervous system
Where are sensory receptors located?
Eyes, ears, skin, etc
Where does stimulation come from?
Sources of energy, light and sound (automatic processes)
Perception
Process where sensations are organized and interpreted to form inner representations of the world
Absolute Threshold (Gustav Fechner)
Weakest amount of stimulus that a person can distinguish from no stimulus at all
Pitch
Highness or lowness of a sound
Related Flashcard Decks
Study Tips
- Press F to enter focus mode for distraction-free studying
- Review cards regularly to improve retention
- Try to recall the answer before flipping the card
- Share this deck with friends to study together
| Term | Definition |
|---|---|
Sensation | The stimulation of sensory receptors and transmission of sensory information to the central nervous system |
Where are sensory receptors located? | Eyes, ears, skin, etc |
Where does stimulation come from? | Sources of energy, light and sound (automatic processes) |
Perception | Process where sensations are organized and interpreted to form inner representations of the world |
Absolute Threshold (Gustav Fechner) | Weakest amount of stimulus that a person can distinguish from no stimulus at all |
Pitch | Highness or lowness of a sound |
Difference Threshold | Minimum difference in magnitude of two stimuli required to tell them apart |
Weber's Constant (Ernst Weber) | The perceived difference in the intensity of light (2% or 1/60th) |
Just noticeable difference | Minimum difference in stimuli that a person can detect (2% or 1/50th) |
Signal Detection Theory | View that perception of sensory stimuli involves the interaction of physical, biological and psychological factors |
Light | Visible light that triggers visual sensation |
Hue | Color of light, determined by wavelength |
Cornea | Transparent tissue forming the outer surface of the eyeball |
Iris | Muscular membrane whose dilation regulates the amount of light that enters the eye |
Pupil | Black looking opening in the center of iris through which light enters |
Lens | Adjusts/accommodates to the image by changing its thickness and focuses image on the retina |
Photoreceptors | Cells that respond to light |
Bipolar Cells | Neurons that conduct neural impulses from rods and cones to ganglion cells |
Ganglion Cells | Neurons whose axons form the optic nerve |
Optic Nerve | Nerve that transmits sensory information from the eye to the brain |
Retina | Inner surface of eye that consists of cells called photoreceptors |
Rods (125 Million distributed across retina) | Rod shaped photoreceptors that are sensitive only to the intensity of light and allow you to see in black and white |
Cones (6.4 Million distributed across retina) | Cone shaped photoreceptors that transmit sensations of color that provide color vision |
Visual Acuity | Sharpness of vision (strongest in retina) |
Presbyopia | Condition characterized by brittleness of lens |
Dark Adaptation | Process of adjusting to condition of lower lighting by increasing the sensitivity of rods and cones |
Complementary | Descriptive colors of the spectrum that when combined produce white or nearly white light |
Red is complementary to | Green |
Purple is complementary to | Yellow |
Blue is complementary to | Orange |