Chapter #2 The Human Factor Flashcards
The Different Bands
Social Band: Months, Weeks, Days
Rational Band: Hours, 10 minutes, Minutes (For Tasks)
Cognitive Band: seconds (Unit Task, Operations, Deliberate act)
Biological Band: ms (Neural circuit, neuron, organelle) (so brain functions)
Fovea Image
sharp central vision
Sound is caused by
fluctuations of pressure in a medium, such as air
Timbre
Richness and brightness to a sound
Envelope
Attack of the sound, the build up to the let down in a sound
Rise, Sustain, Decay, Off
The senses and their definitions
Touch, receptors in muscles, skin, joints and bones
Smell: perceiving odours
Taste: chemical reception of sweet, salty, bitter and sour sensations
Flavour: perceptual process that combines smell and taste
Perception,
and its affect in the 5 senses
1st stage of processing sensory input (Our interpretation)
Auditory stimulus harmonious, discordant
– Visual stimulus familiar, strange
– Tactile stimulus warm, hot; rough, smooth
– Smell stimulus pleasurable, abhorrent
– Taste stimulus sweet, sour
Psychophysics
Relationship between human perception and physical phenomena
Experiment: Giving a person two stimuli and testing them to see if they can spot a difference or not. Ex: Red squares are a different colour?
Cognition
human process of conscious intellectual activity. Ex thinking, reasoning, decision making.
Hard to study since it only exists in the human brain
Hard to measure do to all the different response factors and interpretation factors of sensors
Long term memory, has two areas
Declarative/explicit area: Information on events in time and objects in the external world
Implicit/Procedural area: Information on how to use objects and do things
Short term memory
Chunking: Chunking similar information together to make it easier to remember. Ex digits for a phone number, 905 773 ….
5-7-9ish chunks of working memory
Responders
We control our environment with these, example feet to walk and run, fingers to point, vocal cords to speak
Handedness
right vs left handed and which one you are more in line with.
Language
Mental faculty that allows humans to communicate
Corpus
A word frequency list, containing all words and their frequency of use in the language
Part of Speech Tagging:
Used in word prediction to narrows search space
Recoding
replacing words/characters with shorted tags. Ex th@s , gr8, gf, w -> with
Entropy
is the uncertainty about forthcoming letters, words, phrases, ideas. Ex the weird wordle game
Human Performance
when the sensors, brain and responders work together to achieve a goal.
Reaction Time
The delay between the occurrence of a signal fixed stimulus and the invitations of a response to it.
Attention, 2 types
Divided: attention to more than one task
Selected: attending to one task over others
Variability and error in a selection
Correct, Corrected, Incorrect, Outlier