Nervous System
Consists. of brain and spinal cord
Central Nervous System
Acetylcholine
The receptor cells of the inner ear
Hair cells
How many hemispheres of the brain
Two
What type of processing does Perception include?
Top-Down and Bottom-Up
Nerves and functions outside the brain and spinal cord
Peripheral Nervous System
Beta endorphin
Conversion from sensory stimuli to action potential
Transduction
Deep grove that separates the brain into hemispheres
Longitudinal fissures
What is defined as to perceive stimuli that remain relatively constant over prolonged periods of time?
Sensory Adaptation
Core of the entire nervous system
Spinal Cord
Chemical that aides in mood, learning and sleep
Dopamine
Messages that are below the threshold for conscious awareness
Subliminal messages
Concept that each hemisphere of the brain is associated. with specialized functions
Laterialization
The ability to identify a stimulus when it is embedded in a distracting background
signal detection theory
Cells in nervous system that act as information processors
Neurons
Drug that mimics or strengthens the effects of neurotransmitters
Agonist
Specialized Neurons that respond to specific types of stimuli
Sensory receptors
Thick band of neural fibers that connect hemispheres
Corpus callous
Our perceptions can also be affected by our?
beliefs, values, prejudices, expectations, and life experiences.
Two main functions of the spinal cord
Reflexes and Communication
The disease that is associated with low levels of dopamine
Parkinson's Disease
States the difference threshold is a constant fraction of the original stimulus
Weber's law
What hemisphere is superior to forming associations in memory, selective attention, and positive emotions
Left hemisphere
What else can affect perception?
Motivation