Disabled Human User of Assistive Technologies - Questions

Question # 1

Distinguish between sensation and perception?

Sensations are things in our environment that are registered by the five major sensory organs. Sensation is what we see, hear, smell, taste and feel. Perception is how we interpret these sensations. Perception helps us make sense of our sensations.

 Question # 5

What are the three types of memory distinguished  on the basic of time?

Memory • Sensory memory

– Storage of data after cessation of stimulus

– Afterimages (~250 msec.), auditory echoes (~5 sec.)

• Short-term (or working) memory

– Temporary storage (20-30 sec.) of task information – Maximizing STM use: grouping, patterns

• Long-term memory (information of lasting value) – Turning on/using AT device; goals, destinations – Somatosensory memory, e.g. feel of joystick

Question # 18

Distinguish between range and resolution for an effector system.

Resolution – Degree of reliable fine control of objects 

Range – Maximal extent of movement possible 

Strength Minimal force required to activate an interface. Endurance Ability to sustain a force, and repeat over time. Performance may decrease until total fatigue

Question # 20

What are the five basic elements of language? Distinguish between speech and language.

Communicative (1) nature.

The ancient Roman society preserved records and instructed their progeny in the form and vocabulary, the lexicon of their language. Because of its communicative nature, that ancient language, Latin, existed for centuries perpetuating generational culture which sustained that society.Language is arbitrary in nature,(2) or one word describing an object may very well be another—such as the word “door” could as easily have assignment to a window.

The arbitrary nature of language can be called in to question since objects have names based on what ever they were used for initially; however, for this brief treatment it stands as a ruler for language. Structured (3) and generative (4) are other attributes of true language.

Without structure and generative ability, form, language would have no framework in which to work. Latin has form and organization to its language taught and understood to help perpetuate its use in Roman society by shaping the minds of is speakers to resemble the original group that introduced the language. The records of this society's writings help provide context for the meanings of words.Language is dynamic (5).Language experiences augmentation and refinement as time passes, which can be looked upon also with some question, but for this work dynamic is a decent gauge for measuring language.

Language can be defined as a form of communication that allows intercourse between multiple people, that is arbitrary (in words individually), generative (in word placement), and constantly evolving.