| Question | Answer |
| Two things that come with Perception of constructing reality | Perception
Akinetopsia |
| Define Perception | Allows us to interoperate the world around us |
| What happens with Akintopsia? | You see things in sequenced rays rather than smoothly |
| What do your senses pickup? | Touch: pressure
Sound: Airwave disturbances
Taste: chemical
Smell: Chemical
Vision: waves |
| Environment to the brain process | 1) Stimulus from external
2)Receptors of periphery
3)Thalamus
4)primary cortex
5)beyond
Eye-> Thalamus-> Occipital cortex |
| What helps us see? | Cornea and Lens work with light in order for retina to process the information being seen |
| What is the Retina made up of | Photoreceptors (cones and rods)
Ganglion cells
Bipolar cells |
| Define Rods | Low light active
color-blind
None in the fovea |
| Define Cones | High Light active
In fovea
Short, medium, Long |
| Define Red-blue Colorblindness | Missing medium cones or they don't work |
| What are the colors of each cone? | Short: Blue
Medium: Green
Long: Red |
| Define Fovea | Many cones
few rods
details and color |
| T or F, Saccades and Fixations don't allow the fovea to move in order for the fovea to capture images | F |
| Define blind spot | The optic nerve ends
No photoreceptors |
| What happens to center surround cells in the LGN/ Thalamus | Center: Faster firing rates
Surrounding: slower firing rates
Whole: Constant, nothing |
| What makes up the visual processing pathways | Thalamus
Visual Coding
Dot Detectors |
| Define Parallel Processing | Speed
Mutual influence requires multiple systems |
| What is LGN ? | Lateral Geniculate nucleus
Responsible for vision confirmation
sensory signals from the body goes to opposite hemispheres |
| Define visual coding | single celled
relationship between stimulus and nervous system response |
| Role of MT | Sensitive to speed of movement |
| Role of V4 | sensitive to color and shape |
| Role of V1 | Edge detection '
First cortical representation |
| Define Multiple Receptive fields | Orientation= edge
Motion=movement
corners
angles
less similarity=less firing |
| What system is known as the ___ | Ventral system |
| Define Ventral System | connected to occipital lobe and inferotemporal cortex
Aids in identification of visual objects
FFA and PPA
Damage= visual agnosia (difficult recognizing objects |
| Where system is known as ___ | Dorsal system |
| T or F, Damage to Ventral system = visual agnosia | T |
| T or F, Damage to Dorsal system= visual ataxia | T |
| define the dorsal system | connected to occipital and posterior parietal cortex
Knowing in where objects are located
Damage= Difficulty reaching objects (visual ataxia) |
| Patient D.F. had damaged her ventral stream which meant she could draw pictures from memory but not | copy and object exactly or recognize her own drawings |
| Define The Binding problem | seeing similar colors or letters and mistaking them
Conjunction error |
| 3 way in solving the binding problem is | Spatial position
Neural synchrony
Attention |
| Define neural synchrony | Group of brain cells firing at the same time |
| T or F, Insufficient attention doesn't lead to conjunction errors | F |
