Vision Flashcards
Purity
Saturation
The height of the peaks of a light wave is known as the ________ while the distance between consecutive peaks is referred to as the _________
Amplitude
Wavelength
Wavelength
Colour
Amplitude
Brightness
TRUE OR FALSE: The infrared spectrum is made up of wavelengths longer than humans are able to perceive
True
Infrared light is lower in frequency and longer in wavelength than the light making up the visible spectrum
This structure begins the process of focusing light and does much of the work A) pupil B) lens C) iris D) cornea E) retina
D) cornea
The cornea is responsible for roughly 80% of the focusing power of the eye
What order of structures does light pass through the eye?
- Cornea
- Pupil
- Lens
- Vitreous Humor
- Retina
The path that light is perceived by the retina
Light passes through ganglion cells, bipolar cells, and strikes photoreceptors at the back of the eye and is converted to a neural signal
Signal sent from photoreceptors to bipolar cells to ganglion cells, whose axons make up the optic nerve
Rod or cone?
6 million in the eye
Cones
Rod or cone?
Good for daytime vision
Cones
Rod or cone?
No colour
Rod
Rod or cone?
Good visual acuity
Cones
Rods or cones?
Concentrated in periphery
Rods
Dorsal or ventral stream?
Processes colour
Ventral
Doral or Ventral Stream?
Processes motion
Dorsal
Dorsal or Ventral Stream?
Processes form
Ventral
Dorsal or Ventral Stream
Leads to the temporal lobe
Ventral
Dorsal or Ventral Stream
Leads to parietal lobe
Dorsal
Dorsal or ventral stream
Processes depth
Dorsal
Consider the hypothetical animal, which we will call intropsychipus. The intropsychipus is a very small animal, and cannot move very quickly. It’s natural predator is very slow as well, and so the intropsychipus needs to know the predator is there, but it never needs to mount a rapid escape. What might its eyes be? (Select all that apply)
A) should be relatively small
B) should be relatively large
C) should contain a simple lens
D) should be a light sensitive patch or curved cup
E) intropsychipus doesn’t need eyes
A) and D)
