NURS113 Lecture Notes - Lecture 3: Receptive Field, Spinal Nerve, Stimulus Modality
23 Nov 2017
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A: provides an awareness of body sensations such as touch, temperature, limb position and pain. A: the sensory receptors consist of discrete nerve endings in the skin and other body tissues. Q: coding of sensory information is depending on 3. A: type of stimulus, location of stimulus, intensity of stimulus. Q: describe how sensory information is coded with type of stimulus. A: it is distinguished by the type of receptor activated and the specific pathway over which this information is transmitted to a particular area of the cerebral cortex. A: distinguished by the location of the activated receptive field and the pathway that is subsequently activated to transmit this information to the area of the somatosensory cortex representing that location. A: distinguished by the frequency of action potentials initiated in an activated afferent neuron and the number of receptors (and afferent neurons) activated. A: sensitive to mechanical energy such as pressure and vibrational changes sensitive to specific chemicals.
