Lecture 8 Flashcards
Integrating Perception and Movement
finish this quote by Robert Kiyosaki
“sight is what you see with your eyes, vision ……….
“sight is what you see with your eyes, vision is what you see with your mind”
around half of the cerebral cortex is devoted to what
visual processing
if optical information is ambiguous what will humans do
humans rewight other sensory inputs
where are the cones concentrated in for our vision
concentrated in central retina
where are rods found for vision
peripheral retina
what are rods very sensitive to
light
where is the retina found in the eye
lining of the back of the eyeball
what is the primary sensory organ of the visual system
the retina
what is transduction (visual system)
light waves are converted to electrical impulses
when are cone cells more stimulated
high levels of day vision
when are rod cells more sensitive
more sensitive to low levels of resolution (movement in dark)
what are the 6 extraocular muscles
- superior rectus muscle
- inferior rectus muscle
- medial rectus muscle
- lateral rectus muscle
- superior oblique muscle
- inferior oblique muscle
5 types of eye movements
- vestibular-ocular reflex
- optokinetic reflex (responsible for large movements around)
- smooth pursuit
- saccades
- vergence
what are the skilled eye movements that need to be practiced
- smooth pursuit
- saccades
- vergence
what is monocular vision
seeing with only one eye at a time
what is binocular vision
vision using two eyes with overlapping fields of view
what is binocular vision important for
important for depth perception
what do skilled players orient their central vision to
orient central vision towards key players
what do skilled players concurrently use peripheral vision to what …….
concurrently use peripheral vision to pick up information from other players
less skilled players dont have enough knowledge to effectively …..
process information from peripheral vision
what vision strategy may be used by less skilled players
direct all their attention centrally, to look at key players
skilled athletes posses a superior capacity to use …
central and peripheral vision
what are the two visual channels
perception and action pathway
what does the perception pathway connect
the primary visual cortex with the inferior temporal lobes
what does the action pathway connect
the primary visual cortex with the posterior parietal lobes
what is the ventral stream
the perception pathway
what is the dorsal stream
the action pathway
where is the dorsal stream located
goes over the top like a dolphin
where is the ventral stream located
below the dorsal stream
how is it known that dorsal and ventral streams work in tandem
because research has been done on people with injuries to their brain
in time restricted tasks, skilled athletes anticipate movements based on what
visual information from the environment
finish the quote from J.J. Gibson (1979)
“we must perceive in order to move, but we also…
“we must perceive in order to move, but we also must move in order to perceive”
