Physio Psych Vision

Chapter 6. Woot.

34 cards   |   Total Attempts: 183
  

Cards In This Set

Front Back
In the opening vignette of Ch. 6, Mrs. R suffered a stroke. What ability of her's was impaired?
To recognize objects via the sense of vision
Specifically, what are human visual systems specialize to detect?
Electromagnetic radiation between 380 and 760 nm
The attribute of what best corresponds to that of the dominant wavelength of light?
Hue
Hue is to wavelength Saturation is to...
Purity
What term refers to the bony cavities that contain our eyes?
Orbit
Rods and cones are collectively referred to as what?
Photoreceptors
Relatively, how sensitive to light are rods?
More sensitive than cones
What explains our blind side in the visual field?
There are no photoreceptors in the retina where the axons exit the eye
Name the neuron which receives information from the photoreceptors and passes it on to the ganglion cells
Bipolar
If a light stimulus that contains an equal number of all wavelengths is presented to humans, what perception will humans report?
White
Within what are photo pigments located?
Lamellae membrane
The cell membrane of a retinal photoreceptor contains sodium channels that at rest are normally what and have a resting potential that is what compared to other neurons?
Open; depolarized
Where can action potentials first be observed in the visual system?
Ganglion cells
What is the size relationship of the inner layers of the lateral genetic unit nucleus in relation to the outer layer?
The cell bodies of the inner two layers of the lateral genetic unit nucleus are larger than those of the outer for layers
What pathways are important for the synchronization of behavioral activity to that of the light-dark cycle?
Retino - hypothalamic