lab quiz 2 - ch 8 + 9

cutaneous receptors

nerve receptors in the skin that respond to environment

detects pressure, temperature, or touch

Perception

an interpretation of a stimulus

Sensory adaptation

one becomes used to a certain stimulus and percieves it as less intense, even though the intensity has no change

examples - clothing/socks, eyes w darker room

Tonic receptors

adapt slowly or not at all

pain, equilibrium, blood pressure

Phasic receptors

adapt quickly

termperature, touch, smell, taste, vision

Effects of phasic/tonic receptors

Effects how we percieve a stimulus

fewer action potentials the sensory receptors send = less stronlgy we perceive a stimulus

Receptive field

area monitored by a single touch receptor

Punctate distribution

How receptive fields are distributed

2 Point Threshold test

measuring the size of a receptive field

body parts -have different amounts of touch/sensory receptors

Thermoreceptor

A receptor that responds to changes in temperature.

Nociceptor

pain receptor

Mechanoreceptor

pressure, touch, vibration

law of specific nerve energies

an activated receptor always sends the type of info that it is designed to detect, regardless of the stimulus

adequate stimulus

-significance - sensation depends on which nerve is activated, not how it's activated.

rinne test

differentiate between conductive and sensorineural hearing loss

air conduction = good,

bone conduction = cond hear loss

Weber test

helps determine if the hearing loss is due to sound getting to the inner ear (conductive) or with the inner ear itself (sensorineural

Order of soundwave traveling in ear

pinna, ear canal, Tymp. membrane, Malleus, incus, stapes, oval window, cochlea

What is the different charge between the outside and the inside of a neuron at rest called?

Resting membrane potential, RMP

The amplitude of a compound action potential (CAP) depends on what

size of the axon and how close it is to the recording electrode — larger, closer axons create bigger signals.