Unit 2

Question 1

Distal vs proximal stimuli

Answer 1

Distal: stimuli out in the world
Proximal: what we sense/percieve ( ex. Image on retina us the real object out in the world)

Question 2

5 factors of perceiving a distal stimulus

Answer 2

1. Genes
2. Past experience
3. internal state
4. Environmental context
5. Proximal stimulus

Question 3

Which side (left/right) of the primary visual cortex would process the left visual field?

Answer 3

The left visual field is processed by the right primary visual cortex. Likewise, the right visual field is processed by the left primary visual cortex.

Question 4

Which part of the eye causes our visual blind spot?

Answer 4

The optic disc, since there is a lack of photo receptors there

Question 5

Tympanum

Answer 5

The ear drum

Question 6

Which type of cell detects changes in air pressure in the cochlea?

Answer 6

Hair cells

Question 7

Primary auditory pathway. (7 steps)

Answer 7

1. Auditory nerve.
2. Cochlear nuclei (medulla.)
3. Superior Olivarri nucleus (pons)
4. Nucleus of lateral lemniscus (pons)
5. Inferior colliculus (midbrain)
6. Medial geniculate nucleus (thalamus)
7. Primary auditory cortex.

Question 8

Four types of mechanical receptors for touch

Answer 8

1. Meisner corpuscle (RA1)
2. Merkel cells. (SA1)
3. Pacinian corpuscle (RA2)
4. Ruffini endings (SA2)

Question 9

Primary somatosensory pathway

Answer 9

1. Dorsal root ganglion.
2. Gracile/cuneate nuclei (medulla)
3. Ventral posterior nuclei (thalamus)
4. Primary somatic sensory cortex.