19 Questions
What is the study of sensory physiology primarily concerned with?
Transducing sensory stimuli
Which component is NOT part of the sensory system organization?
Effector neurons
What is the main function of receptor proteins in sensory receptors?
Specializing in detecting incoming sensory signals
What type of receptors fire action potentials only when the stimulus begins and adapt quickly?
Phasic receptors
Which type of neurons provides more precise localization of a stimulus on the sensory surface?
Neurons with small receptive fields
What mechanism increases the contrast between signals from neurons at the center of the stimulus and neurons on the edge, allowing for further discrimination?
Lateral inhibition
In population coding, where is the information about the stimulus encoded?
In the pattern of firing of multiple neurons
How is stimulus intensity encoded by receptor cells?
Through changes in the frequency of action potentials
What happens when the dynamic range of receptor cells is maxed out?
No increase in action potential response
What affects the rate of action potentials?
Graded receptor potentials
What is the function of a photoreceptor?
Detect light
Which receptor is capable of detecting multiple modalities?
Nociceptors
What is the process of transduction in sensory reception?
Conversion of stimulus into changes in membrane potential
How do action potentials encode for the type of stimulus?
Via the receptor specificity and afferent neuron
How can polymodal receptors encode more than one type of stimulus?
Through graded potentials generating action potentials at different temporal rates
What is the basis for stimulus modality specificity according to the text?
High degree of receptor specificity and afferent neuron
What type of neurons provide more precise localization of a stimulus on the sensory surface?
Neurons with small receptive fields
What type of receptors fire action potentials only when the stimulus begins and adapt quickly?
Phasic receptors
In population coding, where is the information about the stimulus encoded?
In the pattern of firing of multiple neurons
Test your knowledge of sensory physiology, control systems, endocrinology, muscles, locomotion, and animal energetics. Topics include chemoreception, mechanoreceptors, hearing, photoreception, vision, thermoreception, and magnetoreception.
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