Chapter 1: HELLER AND SCHIFF Flashcards
haptics
incorporates both cutaneous and kinesthetic information
we obtain information about objects
by actively manipulating them, with covariant cutaneous and kinesthetic input
The sense of touch does not seem to operate as efficiently as vision in detection of outline forms
Touch is far slower, typically scans
sequentially, and has a far more limited “field of view.”
Late blind people
remember how things look, and retain the ability
to represent space in terms of visual images.
Congenitally blind people
must use the sense of touch for spatial representation. If congenitally blind people
use imagery, one would expect that their images must be tactual.
Passive touch
when the observer does not move
and information is imposed on the skin. Gibson thought that passive touch
tended to generate the subjective pole of experience.
Active touch
consists of self-produced movement that allows the perceiver to obtain objective information about the world.
intersensory conflict
if we believe we feel a unitary object.
but the senses do not tell us the same story about this single object (oar in the water being refracted to look crooked)
the right hemisphere is specialized for braille and tactile information processing
Many believe
Sensory compensation
The idea that touch gains in power owing to its use
by the blind.
Epicritic sensibility
involves light touch, fine discrimination of temperature, and spatial localization
Protopathic sensation
involves different nerve fibers and serves pain and extremes of temperature.
The phantom limb phenomenon
a person feels pain
in a nonexistent body part, is one of the most striking examples of illusory
tactile experience
Dynamic touch
(touching with a moving hand)
Tactile imagery
The word “tactile” means that something is able to be touched. When writers use tactile imagery, they are describing something by focusing on the aspects that the reader could feel, or touch.
