PSYCH 10 Lecture Notes - Lecture 5: Classical Conditioning, Hemispatial Neglect, Cerebral Achromatopsia
1/29/18
- Tend to process faces more holistically
- How is perception accomplished in the brain? How can brain damage affect perception?
o Prosopagnosia – face-blindness, is an inability to recognize faces
▪ Must use feature-level clues to tell people apart (hair color, length, blemishes, etc.)
▪ In other words, for people with this illness, faces are not specialized
- Visual processing streams
o Dorsal stream – here patha
o Ventral stream – hat patha
- Achromatopsia
o Cerebral achromatopsia or color agnosia
o An inability to perceive color despite having a normally functioning eye
o Might not necessarily affect the entire visual field!!
- Visual neglect
o Attentional disorder in hih patients are unaare or don’t respond to ojets on one side of
space
o Usually declines over several weeks
o Patients are often unaware of the neglect, so they fail to compensate by changing orientation
- Hemispatial neglect
o Often associated with damage to the right parietal lobe
- The McGurk Effect
- Sound localization
o Easier to distinguish sounds from our sides not in front or behind us
▪ Class demonstration
o The brain integrates different sensory info coming from each ear
- How are we able to hear?
o Audition: hearing, the sense of sound perception
o Sound wave: a pattern of changes in air pressure during a period of time; produces sound
▪ Amplitude determines loudness
▪ Frequency determines pitch
• Hertz is how frequency is measured
• Humans can detect sound waves from -20Hz to -20,000 Hz
o Sound waves travel from the outer ear to the eardrum
▪ Eardrum vibrates as a result of sound waves
▪ Hearing pathway: Sound waves eventually travel to the thalamus and then the auditory
cortex
Learning
- Learning: experience that results in a relatively permanent change in the state of the learner
- Ian palo’s disoer
o Salivation was eventually triggered by what should have been neutral stimuli such as:
▪ Just seeing the food
▪ Seeing the dish
▪ Seeing the person who brought the food
▪ Just hearing the person’s footsteps
o Before conditioning the bell had no effect on the dog at all
o Before conditioning the unconditioned stimulus was the yummy dog food and makes the dog
salivates
find more resources at oneclass.com
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Document Summary
How can brain damage affect perception: prosopagnosia face-blindness, is an inability to recognize faces, must use feature-level clues to tell people apart (hair color, length, blemishes, etc. ) In other words, for people with this illness, faces are not specialized. Visual processing streams: dorsal stream (cid:862)(cid:449)here(cid:863) path(cid:449)a(cid:455, ventral stream (cid:862)(cid:449)hat(cid:863) path(cid:449)a(cid:455) Achromatopsia: cerebral achromatopsia or color agnosia, an inability to perceive color despite having a normally functioning eye, might not necessarily affect the entire visual field! Hemispatial neglect: often associated with damage to the right parietal lobe. Sound localization: easier to distinguish sounds from our sides not in front or behind us, class demonstration, the brain integrates different sensory info coming from each ear. Learning: experience that results in a relatively permanent change in the state of the learner. I(cid:448)an pa(cid:448)lo(cid:448)"s dis(cid:272)o(cid:448)er(cid:455: salivation was eventually triggered by what should have been neutral stimuli such as: Just seeing the food: seeing the dish, seeing the person who brought the food.
