Merkel's disks are used by the visually impaired for reading Braille.One quality of the receptor that allows this is
A)a phasic firing.
B)small receptive field.
C)a special sensitivity to deep pressure on the skin.
D)a large dendritic tree.

Question

Quizplus · Accepted Answer

Merkel's disks have a small receptive field, which allows for the detection of fine details necessary for tasks like reading Braille. This characteristic enables the discrimination of the small, raised dots that compose Braille characters.

Merkel's Disks Are Used by the Visually Impaired for Reading