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Explain a way that sensory nervous system transduce stimuli with different strengths using concept of action potential frequency
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- Describe the nature of the generator potential and explain its relationship to stimulus intensity and to frequency of action potential production.Tonic receptors a.are fast-adapting. b.do not fire continuously to a sustained stimulus. c.produce action potentials at a greater frequency as the generator potential is increased. d.are described by all of these.Receptor potential generates :-a- an electrotonic current which is transmitted along sensory fibers to the CNSb- a nerve impulse at the receptive region of the receptorc- a state of hyperpolarization of the receptor membraned- a nerve impulse at the spike initiating region of the receptor
- Please ASAP. Thanku. What is a receptor (generator) potential? a. A potential that is generated by the sensory stimulus b. A change in the membrane potential of the receptor cell caused by a physical stimulus c. Compound nerve action potential d. A change in the membrane potential of the ascending axonExplain how stimulus intensity can be coded by action potentials if all action potentials are identical.The ability to localize the site of stimuli depends upon :-a- the type of the stimulated receptorb- connections between the receptor and the sensory cortexc- the rate of adaptation of the stimulated receptorsd- the nature of the stimulus
- describe how the membrane potential varies over time AND distance as a graded potential move across the cell body of a neuron. Describe the movement of ions within the cell body as the graded potential moves away from the stimulusSlowly adapting receptors differ from rapidly adapting receptors in :-a- stopping to discharge after a relatively longer period of constant stimulationb- detecting the dynamic properties of stimulic- detecting velocity of stimulid- generating receptor potentials as long as stimulus is applied.Signal detection theory suggests that deciding whether a stimulus is present depends partly on the ________ and partly on the potential gain or loss associated with deciding that it is present or absent the strength of the stimulus the focus of your attention probability that the stimulus will occur level of your anxiety
- Certain cells in the retina respond differently to the direction in which objects move. To understand how cells in the retina respond to different visual stimuli, the activity of a retinal ganglion cell was measured while a square moved across its visual field. Which statement best explains the increases in voltage during the periodic spikes? A. Depolarization of a neuron past a threshold voltage causes sodium channels to close. B. Depolarization of a neuron past a threshold voltage causes sodium channels to open. C. Depolarization of a neuron past a threshold voltage causes potassium channels to close. D. Depolarization of a neuron past a threshold voltage causes potassium channels to open.Once initiated, the receptor potential :-a- spreads to a long distance along the sensory nerve fiberb- amplitude is not related to the strength of the stimulusc- always generates an action potential from the receptord- stays for a variable period depending on the type of the receptorFill in the blank: The moment following the passage of an action potential during which a threshold stimulus will not triggeranother impulse is called the ___________________ period.