Sensation

Question 1

Sensation

Answer 1

The detection of external stimuli and the transmission of this information to the brain.

Question 2

Perseption

Answer 2

The processing, organization and interpretation of sensory signals
ex: green light

Question 3

Bottom up processing

Answer 3

Perception based on the physical features of the stimulus.Your brain starts with what you see, hear, or feel (raw information) and works up to figuring out what it is.

Question 4

Top down processing

Answer 4

Knowledge, expectations, or past experiences shape the interpretation. You use what u already know to make sense of the new information you incounter.(Knowing to avoid dangerous sitch)

Question 5

Sensory coding

Answer 5

Sensory info to chemoelectrical info. Translated so it can be read by the brain.

Question 6

Anatomical coding

Answer 6

The receptors ( eyes ears) are connected to specific parts of the brain. When those parts of the brain are activated, the source of stimulation is clear

Question 7

Temporal coding

Answer 7

Different stimulation gives rise to different rates of activity in the receptor. E.g when its bright vs low light.

Question 8

Absolute threshold

Answer 8

The minimal intensity of stimulation that most occur before you experience a sensation

Question 9

Difference threshold

Answer 9

The minimum amount of change required for a person to detect a diffrence between two stimuli

Question 10

Signal Detection Theory

Answer 10

How we decide whether we detect a signal (like a sound, sight, or touch) in the middle of noise or distractions. It’s used to understand decision-making under uncertain conditions.(Imagine you’re home alone, and you think you hear the doorbell while music is playing. Your brain has to decide)

Question 11

Sensory adaption

Answer 11

A decrease in sensitivity to a constant level of stimulation. If a stimulus is presented countinuously the responses of the sensory systems that detect it tend to diminish overtime. E.g Fridge running, adapting to the dark, adjusting to a cold pool

Question 12

Haptic sense

Answer 12

the sense of touch, sensation of temperature, pressure, pain and where your limbs are in space

Question 13

Kinesthetic sense

Answer 13

Ability to sense movement and the bodys position without visual aid

Question 14

Fast fibers

Answer 14

For sharp, immediate pain: activated by strong physical pressure and temp

Question 15

Slow fibers

Answer 15

For chronic, dull, steady pain: activated by chemical changes in tissue when skin is damaged.

Question 16

Gate control theory

Answer 16

when pain receptors are activated a neural gate opens in the spinal cord and allows pain signals to be carried by nerve fibers

Question 17

Closing the gate

Answer 17

Drug treatments
coignitive state ( distraction, poisitive mood,relaxation)

Question 18

Opening the gate

Answer 18

Worrying or focousing on the painful stimulus

Question 19

Olfaction

Answer 19

The sense of smell

Question 20

Odorants

Answer 20

Passes into the nose and nasal area
They contact a thin layer of tissue embedded with smell receptors called the olfactory epithelium

Question 21

Synaeshesia

Answer 21

Where sensation of one type of leads to an automatic perception of an other type. E.g seeing music as colours