Save
Sensation and Perception
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Morgan Barringer
Visit profile
Cards (49)
What are the main topics covered in the lecture plan on Sensation & Perception?
General principles of sensory coding
,
colours
from sensation to perception, and parallel processing in the
visual cortex
.
View source
What is the role of sensory systems in relation to physical events in the world?
Sensory systems detect physical events, process the information, and convey it to the
brain
.
View source
How does sensory processing occur in relation to conscious awareness?
Much sensory processing occurs
below
the level of conscious awareness.
View source
What factors influence sensory processes?
Sensory processes
depend on the magnitude of
stimulus
, the
adaptation state
of the system, and internal noise.
View source
What is perception in the context of sensory information?
Perception is the
organization
,
identification
, and interpretation of sensory information to understand the environment.
View source
Why have sensory systems evolved in species?
Sensory systems have evolved to provide information relevant to survival within an
ecological niche
of a species.
View source
What is the limitation of sensory systems in terms of stimulus response?
Sensory systems respond to only a
fraction
of the full physical range of any stimulus category.
View source
Who proposed the Law of Specific Nerve Energies and what does it state?
Johannes Müller
proposed it, stating that each nerve fiber is activated primarily by a certain type of stimulus.
View source
What is the process of transduction in sensory receptors?
Transduction is the
conversion
of specific types of
energy
into
electrical
signals by
sensory
receptors.
View source
What are the five major sensory systems defined by Aristotle?
Vision,
Hearing
, Smell,
Taste
, and
Touch.
View source
What is proprioception and its role in the body?
Proprioception enables conscious awareness of the
posture
and movements of the body, particularly the limbs and head.
View source
What does exteroception involve?
Exteroception involves
touch
, contact,
pressure
, stroking, and vibration, along with active motor components.
View source
What is interoception and its significance?
Interoception is the sense of the
internal state
of major organ systems, crucial for regulating
autonomic functions
.
View source
What is the function of association cortices in the brain?
Association cortices integrate sensory information from multiple
modalities
with information from other
brain regions
.
View source
What are the four attributes mediated by sensory systems?
Modality
,
Location
,
Intensity
, and Duration of a stimulus.
View source
What type of sensation do Merkel cells and Ruffini endings respond to?
They respond to
steady pressure
.
View source
What sensation does Meissner's corpuscle detect?
Meissner's corpuscle detects
tingling
sensations.
View source
What sensation does Pacinian corpuscle detect?
Pacinian corpuscle detects
vibration
sensations.
View source
How do olfactory receptors function in sensory transduction?
Olfactory receptors bind specific
odorant molecules
and depolarize the sensory nerve via a
second messenger system
.
View source
What happens to photoreceptors when they absorb light?
Photoreceptors
hyperpolarize
when absorbing light, closing their
channels
.
View source
What do tuning curves of sensory receptors measure?
Tuning curves measure the minimum amplitude of stimulation needed to activate a sensory receptor over a range of
stimulus energies
.
View source
How does the human ear's sensitivity vary across frequencies?
The human ear is sensitive to a range of frequencies from
20 Hz
to
20 KHz
, with
hair cells
having differential sensitivity.
View source
How do the sensitivities of rods and cones differ under varying light conditions?
Cones are more sensitive in light, while rods are more sensitive in the
dark
.
View source
What does spatial awareness involve in sensory perception?
Spatial awareness involves locating the site of
stimulation
, discriminating size and shape, and resolving fine detail of the
stimulus
.
View source
How does the density of sensory receptors affect visual resolution?
The density of sensory receptors and the size of the
receptive field
determine the resolution of the visual image.
View source
What is lateral inhibition and how does it affect perception?
Lateral inhibition enhances contrast in perception by inhibiting
neighboring
cells, creating perceptual illusions like the
staircase illusion
.
View source
How is the intensity of sensation determined?
The intensity of sensation is determined by the
stimulus amplitude
.
View source
How is stimulus intensity encoded in sensory nerves?
Stimulus intensity is encoded by the
frequency
of
action potentials
in sensory nerves.
View source
How do slowly and rapidly adapting mechanoreceptors respond to stimuli?
Slowly adapting mechanoreceptors respond throughout a
continuous
stimulus, while rapidly adapting mechanoreceptors respond only at the
beginning
and
end
of the stimulus.
View source
How many rods and cones are there in the retina?
There are about
20 million
rods and
6 million
cones in the retina.
View source
Why are the proximal neurons shifted to the side in the fovea?
To allow light a direct pathway to the
photoreceptors
, minimizing distortion.
View source
What is the significance of the visual image received at the foveola?
It is the least distorted visual image due to the direct pathway to
photoreceptors
.
View source
Who proposed the trichromatic theory of color vision?
Thomas Young
and
Hermann von Helmholtz
proposed the trichromatic theory.
View source
What does the trichromatic theory state about color vision?
Color vision is based on three principal colors and the relative activity in a
three-receptor system
.
View source
What visual phenomena does the trichromatic theory not explain?
After-images
Simultaneous color contrast
View source
What is simultaneous color contrast?
It is the condition where two surfaces with the same
spectral composition
appear to have different colors against different backgrounds.
View source
What are the colors that produce other colors when additively mixed together called?
These are called
primary colors
.
View source
Who proposed the opponent color theory?
Ewald Hering
proposed the opponent color theory.
View source
What are the seven steps of the principle of visual perception?
Light enters the eye
Projects onto the retina
Photoreceptors
convert light to signals
Signals travel through
optic nerves
Partial crossing at the
optic chiasm
Information processed in the
thalamus
Sent to visual cortices in the
occipital lobes
View source
What are the two pathways in parallel processing of visual information?
The
'Where or How'
pathway and the 'What' pathway.
View source
See all 49 cards
See similar decks
Vision
71 cards
Sensation and Perception
23 cards
Sensation and Perception
63 cards
1.2.1 Sensation and Perception
AQA GCSE Psychology > Unit 1: Cognition and Behaviour > 1.2 Perception
65 cards
Sensation and Perception
29 cards
Auditory sensation and perception
Sensation and Perception
28 cards
Sensation and Perception
307 cards
Sensation and Perception
19 cards
Sensation and Perception
196 cards
Sensation and Perception
TERM 2
86 cards
Sensation and Perception
55 cards
Sensation and perception
356 cards
Sensation And Perception
25 cards
Sensation and Perception
PSYCH
44 cards
Sensation And Perception
21 cards
8.1 Sensation and Perception
Edexcel GCSE Psychology > Topic 8: Perception – How do you interpret the world around you?
38 cards
8.1 Sensation and Perception
Edexcel GCSE Psychology > Topic 8: Perception – How do you interpret the world around you?
38 cards
Sensation and perception
perseption
19 cards
perception
Sensation and Perception
14 cards
Sensation and perception 4
48 cards
Sensation and perception 2
28 cards