Ch 4 Flashcards
This is _: taking in information through our senses and processing it in order to determine what is out there in the world
perception
T or F: there is not a gap between the information coming into our senses and the kind of information that the brain actually wants to figure out about the world
false - quite the opposite. There can be a huge disconnect, for which it requires an accelerated brain to understand
_, the conversion of physical properties of the world or body into a neural code by the peripheral nervous system
sensation
The conversion of physical properties of the world or body into a neural code by the PNS takes place in the _ _s
sensory neurons
Sensory neurons are spread throughout the _ nervous system
peripheral
Sensory neurons respond by specific kinds of physical properties such as:
_
heat
light
pressure
Does physical stimulation always lead to excitation of a sensory neuron?
no, but often it does
Excitation of the neuron means there are more frequent _ _
action potentials
_ is the process of converting physical stimulation into a neural code
transduction
Transduction may be thought of as a kind of _ of local conditions in the environment and the body
measurement; as though a barometer
Order of perception:
1. …
2. the neural code is passed along to the central nervous system to be processed
3. processing in the cortex generates behaviour
- the senses have converted their measurements into a neural code, i.e., transduction
T or F: we see with our eyes or hear with our ears
False - we do so with our brain which converts sensory signals from those parts into our senses
Sensory stimulus consists of _ of local measurements of pressure/temperature made by specialized neurons embedded in your skin
millions
To perceive the identify of an object when touching something, the brain must combine millions of sensory measurements and .compare the input to…
stored representations of that which has been encountered before
Does perception require some or a majority of the cortex?
the majority - it’s a difficult problem
Senses involve measuring and interpreting properties of the external environment, which is called _eption
exteroception
Gustation/taste is based on substance-bound _ _ in the mouth
chemical compounds
The five _n senses include: touch, gustation/taste, olfaction/smell, vision/seeing
exteroception
We have multiple senses that measure properties of our own body, which is called _ception
interoception
_eption is the sense of where in space our limbs are
proprioception
Nociception is the sense of…
pain due to bodily damage
_ception is our sense of balance
equilibrioception
Two additional senses that measure properties of our own body include…
the feeling of something in your throat
the sense of f…
fullness from eating
There are _ broad classes of sensory receptors found throughout different parts of the body
four