Home > Psychology MCQ Questions and Answers > Which of the following best demonstrates how the center-surround structure of ganglion cells enhances edge contrast in visual perception?
Which of the following best demonstrates how the center-surround structure of ganglion cells enhances edge contrast in visual perception?
A
Craik bands
B
Mach bands
C
Luminance bands
D
Optic bands
Correct Answer:
A
Craik bands
- Craik bands, described by Kenneth Craik, explain how the center-surround organization of retinal ganglion cells enhances edge contrast.
- This effect is based on lateral inhibition, where stimulated neurons suppress the activity of neighboring neurons.
- Brightness differences at edges are amplified, making borders appear sharper than they actually are.
- The center of a receptive field responds differently from its surround, creating a contrast-enhancing system in visual processing.
- This mechanism helps the visual system detect edges and boundaries efficiently, which is essential for object recognition.
- Although Mach bands (by Ernst Mach) are commonly observed, they represent the perceptual illusion, while Craik bands relate more closely to the underlying neural process.
- Mach bands are the perceptual manifestation of this mechanism.