The manner in which various stimuli are perceived as different in the central nervous system, as all sensory receptors send signals in a similar manner. Introduction: Sensory receptors are located in sense organs and are responsible for detecting stimulus. A stimulus is any change in the environment, be it chemical, physical, or mechanical. The stimulus is perceived by sensory organs and results in generation of receptor potential. The receptors send signals to the brain, which interprets the data and sends signals to motor organs that proceed accordingly. The brain, a part of central nervous system (CNS), is an important organ and all information is primarily passed to CNS, except for reflex actions.

Question

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.

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Question

Chapter 41.1, Problem 2SB

Summary Introduction

To review:

The manner in which various stimuli are perceived as different in the central nervous system, as all sensory receptors send signals in a similar manner.

Introduction:

Sensory receptors are located in sense organs and are responsible for detecting stimulus. A stimulus is any change in the environment, be it chemical, physical, or mechanical. The stimulus is perceived by sensory organs and results in generation of receptor potential. The receptors send signals to the brain, which interprets the data and sends signals to motor organs that proceed accordingly. The brain, a part of central nervous system (CNS), is an important organ and all information is primarily passed to CNS, except for reflex actions.

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