Chapter 2 Flashcards
“Umwelt” means
The surrounding world or environment
“Innenwelt” means
It’s world as perceived and internalized
Uexküll believes that security is
more important than wealth
Perception is not a toolkit but is a..?
Integrated package directed towards solving the problems of life that an animal faces.
our eyes can only see _____ to _____on the electromagnetic spectrum.
420 nm2 to 700 nm
overexposure to ultraviolet rays leads to ?
skin cancer
Why do 2 colours put together make another colour?
BEcause we have 3 colour receptors, tuned to different wave lengths.
Does red and green become yellow?
No, it only seems yellow, with the right instrument it can be distiguished
fish and reptiles have how many colour receptors?
4
Birds have how many colour receptors?
6
Dogs have how many colour receptors?
2
What is polarity?
The sun’s light that has another dimension that we are ignorant to.
What is Electromagnetic radiation?
waves passing through space.
What way does electromagnetic radiation oscillate?
predominately horizantal, vertical or any direction (this is their polarity)
Polarization of the sun is dependent?
the suns position in the sky.
why can the sun be used as a compass?
Because polarization changes dependent on the suns position.
We see most of what we look at through both eyes, also known as?
Stereo depth (pidgeons have bad stereo vision)
What is the binocular visual field? how large is it?
The area we see with both eyes, it is 120 degrees out of our 200 degree field-view.
Pigeons eyes overlap for ___ but have a ____visual field
35 degrees… have a much larger visual field 340 degrees.
The lateral field is?
the area of vision with one eye (pigeons can almost see 360)
Pigeons use which view when flying?
Large Lateral view(sensitive to UV light)
What is a trichromat?
having 3 colour receptors
how do humans and pigeons recognize 3d objects?
using perspective and shading information
Smell is a function of ? why?
communication, because it influences the behaviour of another
female mice enjoy smells of
adult mice and proximal mice in comparison to the opposite
Why is it possible to locate a sound?
reaches ears at different times, farther apart the ears the better the locating.
sound is ? humans can hear from what to what hz?
waves of pressure going thru the air. humans hear 100hz to 20khz
Bats hear how many octaves higher ?
two
homing pigeons & rodents use what to get home?
Magnetic sensitivity/field
all animals around the world orient themselves to
the same north and south dimension
What changes as an object becomes closer? (electric sense)
Electric reflection and sharpness of edges
one species is sensitive to changes in air pressure.
pigeons
Ari pressure provides a flying animal with
altitude and weather information
why do mammals lack UV sensitivity?
evolutionary history of nocturnal habits has limited function of the eye
