sensory systems

Question 1

sensory systems

Answer 1

identifies different stimuli in the environment
organise and interpreting sensory input and attach meaning or give an appropriate response
-auditory
-visual
-gustatory
-kinastethic
-olfactory

Question 2

Sensation

Answer 2

physiological process of receiving a raw physicaal energy from stimuli

Question 3

Perception

Answer 3

psychological process of the sensory neurological signals that reach the brain are selected, organised and interpreted so that we can attach meaning to the sensation

Question 4

Transduction

Answer 4

sub process of converting/transforming the raw physical energy into a sensory neurological signal

Question 5

Agnosia

Answer 5

breakdown between sensation and perception

-visual= cannot recognise something by just seeing

Question 6

Perception depends on:

Answer 6

• the functionality of our an individual’s sensory system
• the different types of stimuli that an individual is exposed to in their environment
• the individual’s context and experiences (what stimuli the individual is used to by now)

Question 7

Threshold

Answer 7

point at which a stimulus will trigger a response

stimulus has to be strong enough to be detected

Question 8

Different types of threshold:

Answer 8

absolute threshold

difference threshold

Question 9

Absolute threshold

Answer 9

the weakest detectable stimulus - just noticeable

Question 10

Just noticeable difference (JND)

Answer 10

JND= difference threshold

Question 11

Difference threshold

Answer 11

aims to identify what the lowest intensity of the stimulation is that can create a noticeable difference

Question 12

Why is JND subjective?

Answer 12

people have differing perceptions

Question 13

Signal Detection Theory

Answer 13

various factors affects the detection of a stimulus besides the intensity of it

Question 14

Other factors influencing the detection of the stimulus:

Answer 14

• personal experiences
• biases
• expectations
• degrees of motivation
• previous exposure
• personal sensitivity
• level and ability of alertness
• willingness and confidence to respond
• personal strengths

Question 15

Perceptual set

Answer 15

creates a shift in how one interprets sensory input

• visual perception is subjective because although seeing the same thing, it could be perceived differently and still be an accurate perception of visual stimuli
• relies on what people focus their attention on

Question 16

Feature analysis

Answer 16

detecting specific elements in a visual stimulus and assembling them into more complex forms
-lines are assembled into shapes

Question 17

Physiological perception

remember sensation is a physiological process

Answer 17

dependant on vision

Question 18

Psychological perception

perception is a psychological process

Answer 18

dependent on cognitive association based on memory

Question 19

2 ways in which the axons leave the back of each eye from the optic nerve:

Answer 19

1) project visual info to the thalamus
2) optic pathways travel from the thalamus to the primary visual cortex (occipital lobe)
optic nerve criss crosses at the optic chasim

Question 20

Optic chasim

Answer 20

fibres of each retina will cross over to the opposite side of the visual cortex