The Perception of Mind and Brain Flashcards

98 cards   |   Total Attempts: 188
  

Cards In This Set

Front Back
What is perception?
Experiences resulting from stimulation of the senses
-set of processes by which we recognize, organize and make sense of sensations we receive from environmental stimuli-What we sense is NOT THE SAME as what we percieve (with our minds)
What is the challenge of the inverse problem?
Answer 2
How to determine the distal stimulus from the proximal stimulus

proximal stimulus is what projected onto our retina
distal stimulus is what is actual out there in the world
-the percept is our concept of that.

--> single image on retina has mutliple interpretation, so how do we figure it out, many senses of information
What is the point of perception?
Necessary in order to know how to act to achieve goals
What sources of information help up sort out our issues with the inverse problem?
-Genes (info learned on timescale of evolution)-Past experience (info learned from timescale of human life)
0Internal state (info learned on timescale of current episode)
-Environmental context (info learned now)
-Proximal stimulus (the stimulus itself
Distal Stimulus
An object or process out in the world
Sensory Receptors
Specialized cells to transduce (convert) external phenomena (light, sound, pressure etc) into neural signals
Proximal stimulus
-Neural signal generated by external stimuli in sensory receptors
Neural pathway (sensory systems)
From sensory receptors via thalamus nuclei to cerebral cortex
Hierchy of cortical areas
-attempt to construct useful representation of distal stimulus
Percept
Mental representation of the distal stimulus
Question 11
Key features of the Retina
Answer 11
1.Fovea - central of visual field, has densist concentration of photoreceptors (get the most information from light that falls on fovea
2. There is a gap in retina where optic nerve runs out (forms blind spot
3. photoreceptors are at back of retina and are facing away from light. Light has to travel through several cell layers to reach receptors
How many types of rods do we have?
Answer 12
One type
Question 13
How man types of cones do we have
Answer 13
Three types-each type has different sensitivity to different wavelengths of light (red green blue)

-cones opperate well when there are lots of light, rods operate well in low light conditions
Compare/contrast neurons and photoreceptive cells
-photoreceptive cells activated by light rather than another cell, but both can send an action potential.
Descrive the retinal receptor cell density distribution with respect to the blind spot
Answer 15