Exam 8: General Principles of Sensory Processing, Touch, and Pain

The area of the skin that is innervated by a single spinal nerve is called a(n) _______.

The smallest diameter fibers linking receptors to the central nervous system are _______ fibers, which convey temperature, pain, and itching sensations.

Afferent fibers from the periphery carry nociceptive information to the dorsal horn neurons, whose axons immediately

Receptors that are sensitive to ultraviolet light are found in

The doctrine of specific nerve energies is especially associated with

A monkey is trained to expect a see a circle whenever a computer screen is blue. Which part of the cortex would most likely become active when the monkey is shown a blue screen without a shape?

The doctrine of _______ states that each sense has its own receptors and independent neural channels.

What is meant by "sensory adaptation," and what is the significance of this phenomenon?

Discuss the general operation of receptor cells across species; using the Pacinian corpuscle as an example, describe events involved in the generation of impulses by sensory nerve endings.

Which region appears to be involved in the process of attention?

The receptive fields associated with Merkel's discs

Treatment with placebo has been found to provide pain relief in about _______ of patients who just had their wisdom teeth extracted.

Matching -Ruffini's ending _____

Matching -Meissner's corpuscle _____

The receptors through which capsaicin exerts its effects are

Studies have revealed that the _______ is especially active in tests that require spatial attention, and this region is believed to play a significant role in an "executive" attention system.

Which of the following body parts are not highly represented on the sensory homunculus?

Anti-inflammatory drugs reduce pain by

Provide a precise anatomical description of the dorsal column somatosensory and anterolateral (spinothalamic) pathways from the periphery to the brain. How are these pathways similar and different?

Refer to the figure. What is the name of the cell indicated by the label A? What chemical is secreted by this cell at the site of a skin injury?