Lecture3&4 Flashcards
What does the Superior Colliculus?
midbrain structure; receives visual and auditory input from layers I,II, III; involves orienting and attending in layers IV,V,VI,VII; inputs from various sensory systems terminate in deeper layers, thus unisensory info converging occurs
What neurons send nerves impulses towards the CNS?
Afferent receptor neurons
What neurons send nerve impulses Away from the CNS?
Efferent Receptor neurons
What is multisensory Integration (MSI)?
Argues that our senses are designed to efficiently process info from various sensory channels in a concerted matter
What are the basic rules that govern MSI?
Temporal rule, inverse effectiveness rule, spatial rule
What is the objective of Jeanette’s doctoral research?
to determine the impact of spatial alignment of diff sensory inputs on multi intergration in the brain, to determine if the multi interactions in cortex truly adhere to the ‘spatial rule’
what is the temporal rule?
multisensory inputs in SC is greatest for those presented at the same time or in close temporal proximity
What is the inverse effectiveness rule?
response of multisensory reponses is inversely related to the magnitude of the unisensory inputs
What is the spatial rule?
multisensory integration was greatest when constituent stimuli were presented to the same spatial location
what were the results of Jeanette’s research?
mean reaction times to all multisensory conditions were significantly shorter than to the unisensory conditions
What cells sends info from a region of the cortex o another area of CNS?
Pyramidal cells
what are the 2 types of cortical cells (in the cortex?
spiny neurons and aspiny neurons
Largest cells send axons the furthest, true or false?
True
What cells remain in the area of cortex where they are located?
stellate cells
What is the general function of the left hemisphere?
mostly language based (role in producing and understanding language)
