Perception Flashcards
Sensation
the stimulus-detection process by which our sensory organs respond to and translate environmental stimuli into nerve impulses that are sent to the brain
Perception
active, creative process in which raw sensory data are organised and given meaning
Bottum-up processing
system takes in individual elements of a stimulus and combines them to form a unified perception
Top down processing
sensory information is interpreted in the light of existing knowledge, concepts, ideas and expectations
Attention involves 2 processes
Focusing on certain stimuli and filtering out other incoming info
Types of attention
· Focused Attention: the ability to respond discretely to specific visual, auditory or tactile stimuli.
· Divided Attention: the highest level of attention and it refers to the ability to respond simultaneously to multiple tasks or multiple task demands.
· Sustained Attention – ability to maintain a consistent behavioural response during continuous and repetitive activity
· Selective Attention – ability to maintain a behavioural or cognitive set in the face of distracting or competing stimuli; incorporates the notion of freedom from distractibility
· Alternating Attention – ability of mental flexibility that allows individuals to shift their focus of attention and move between tasks that have different cognitive requirements
Factors affecting perception
Aurosal
Emotions
Value
Environment
Factors affecting attention
Stimulus factors- intensity, novelty, movement, contract, repetition
Personal- motives, interest, mood, arousal