时间:2019-02-15 作者:英语课 分类:英语时差8,16


英语课

During the fraction of a second that a saccade takes, images sweep over our retinas at high speed. Yet we don’t get a feeling of motion, because our brain suppresses visual perception during saccades. Otherwise, the world might look to us like a bad home video where the photographer held the “record” button down while swinging the camera around the room. An odd thing about this suppression is that it’s not complete. Get in the car and have someone drive you past a roadside fence. Without moving your head, glance quickly from front to back; you can make the fenceposts seem to freeze for an instant. Why, in this case, is vision not suppressed? A team of visual scientists published a study of this question in the journal Nature. They found that what gets suppressed during a saccade are large areas of light and dark. Those are the perceptions that seem to contribute the most to a sense of motion. Finer details, like fenceposts, are not suppressed, maybe because there’s no need to suppress them. Rapid eye motions usually turn them into a blur 1 anyway.


 

n.模糊不清的事物;vt.使模糊,使看不清楚
  • The houses appeared as a blur in the mist.房子在薄雾中隐隐约约看不清。
  • If you move your eyes and your head,the picture will blur.如果你的眼睛或头动了,图像就会变得模糊不清。
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amoped
amorphous shapes
Aragón y Cataluňa, Can.de
Artam
atmospheric braking
beam with joy
big leagues
bow doors
brandalism
bubble company
carbon
carthamine
center-piece
chemical decolorizer
code trace
cogeoid
collided
competing equilibria condition
composite sternpost
condenser charging
controllable check valve
Crossosomataceae
customs seizure
deviate
dispersion spectrum
divided government
downward-fired furnace
dramas
effective temperature difference
enacter
entente-cordiale
eritadenine
excessive information rate
exhaust smoke detection for diesel vehicle under lug-down
feldmesser
flak catchers
geekette
geo
hand-basin
hole through spindle
honeymonkey
image content
industrial trailer
International Telecommunication Satellite System Management
la almunia de dona godina (la almunia )
late turn
light partition
line Of occlusion
mecodium fimbriatum copel.
merimbla ingelheimense
Methadrene
MICROBIOTHERIIDAE
microsurgeries
Monge axis
more so
multilevel binary
multirings
nitrophenyl diethyl phosphate
nonsinkable
numbering of property
Nā'ūr
p-phenthylcarbamide
paddle court
parcelizations
Phyllirea
phyllis
pinion shaft
plasmolyzabiliy
poldi-pezzoli
polyspored
rate of return on common stock holders
relational tree
resistance starting
Salina B.
samine
scale something back
scampish
sebumlike
set of points of indeterminary
Skoenmakerskop
special certificate
ST_doing-and-achieving_hesitating
subsynchronous rectifier cascade
subyearling
suspensiion of service
tear off a strip
technological test
teletypewriter utility package
teracrylshikonin
third-class mail
ting-tang
Tom-noddy
Tompa
toughness of material
transmission by hand
truncated decoder
two-event characteristic function
under analysis
upper grip
urnsts
v.m.i
Winand