What is the difference between stimulus generalization and stimulus discrimination?  Provide examples

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45-46. A) Trace the flow of information through the nervous system from stimulus to response. Be sure to identify the types of neurons involved.     -OR- B) Describe what is meant by sensory adaption, and explain how this can be considered an evolutionary adaptation. -OR- C) Describe what is meant by afterimage, and explain how this supports the trichromatic theory of color vision.

You want to record membrane potential changes in axons of neurons that process different types somatosensory information. Which sequence ranks the speed of maximum firing rate from slowest to fastest that you predict you will record   a)  muscle spindle < cutaneous mechanoreceptor < pain and temperature   b)  pain and temperature < muscle spindle < cutaneous mechanoreceptor   c)  cutaneous mechanoreceptor < pain and temperature < muscle spindle   d)  cutaneous mechanoreceptor < muscle spindle < pain and temperature   e)  muscle spindle < pain and temperature < cutaneous mechanoreceptor   f)  pain and temperature < cutaneous mechanoreceptor < muscle spindle

How does the nervous system code information about stimulus intensity?

Why can tactile stimulus be localized in parts of our body better than other parts?

In the process of sensory coding    Recruitment of additional neurons occurs with a weak stimulus in order to make the stimulus stronger.   The larger the receptive field of a sensory receptor, the greater the expected acuity and the more accurate the two-point discrimination.    Lateral inhibition of neighboring receptors resulting in a relative reduction of action potentials in the neighboring second order neurons would be expected to increase acuity.   A receptor potential that remains suprathreshold into the absolute refractory period will result in additional action potentials.

How does a neuron communicate a stimulus's strength?

Advantages of tactile localization

You conduct an experiment in the lab to determine the adaptation rate of different touch receptors. Based on the data shown here, what can you conclude? (the top trace for each receptor is the stimulus and the bottom trace for each receptor is the receptor response) ||||| Receptor A Receptor B ||||||||||||—–—– Receptor A is slow adapting and receptor B is slow adapting Receptor A is fast adapting and receptor B is fast adapting Receptor A is fast adapting and receptor B is slow adapting Receptor A is slow adapting and receptor B is fast adapting