Lecture 5. Perception Mechanisms Flashcards
receive stimuli outside of our bodies
exteroceptive sensory systems
process of detecting the presence of stimuli
Sensation
higher order process of recognizing, integrating and interpreting patterns of sensations
Perception
3 Types of Sensory Area Cortex
1) Primary Sensory Cortex
2) Secondary Sensory Cortex
3) Association Cortex
area that receives most of its input directly from the thalamic relay nuclei
Primary Sensory Cortex
areas that receives most of their input from the (1) primary sensory cortex or (2)some of the secondary sensory cortex
Secondary Sensory Cortex
any area that receives most of its input from more than one sensory system
Association Cortex
In association cortex, most input comes from?
via areas of secondary sensory cortex
Three major principles
Hierarchal Organization, Functional Segregation and Parallel Processing
Sensory structures are organized based on its specificity and complexity of their function
Hierarchal Organization
each of 3 cortex levels in a sensory system contain functionally distinct areas that specialize in diff kinds of analysis
Functional Segregation
information flows through the components over multiple pathways
Parallel System
simultaneous analysis of a signal in different ways by multiple parallel pathways of a neural network
Parallel Processing
vibrations of air molecules
Sounds
Humans hearing capacity
20-20,000 hertz
Physical characteristics of sounds and how we perceive it
Physical and Perceptual Dimensions
Three Physical and Perceptual Dimensions
Amplitude, Frequence, Complexity
Amplitude
Loudness
Frequency
Pitch
Complexity
Timbre
a sound of single frequency
Pure tone
Pure tones is represented as
Sine wave patterns/vibrations
Pure tones exist in?
laboratories or sound recording studios
Close relationship in Pure tone?
frequency and perceived pitch
