Gen Psychology exam 2 Flashcards
Neuroscience
Theme for Neuroscience
Psychological, biological, social, and cultural factors influence behavior and mentalprocesses.
Neuroscience
Function for neurons
Nerve cell; the basic building block of the nervous system
Neuroscience
Cell body
The part of a neuron that contains the nucleus; the cell’s life-support center.
Neuroscience
Dendrites
A neuron’s often bushy, branching extensions that receive and integrate messages, conducting impulses toward the cell body.
Neuroscience
Axon
The neuron extension that passes messages through its branches to other neurons or to muscles or glands.
Neuroscience
Action Potential
A neural impulse; a brief electrical charge that travels down an axon
Neuroscience
Refractory Period
In neural processing, a brief resting pause that occurs after a neuron has fired; subsequent action potentials cannot occur until the axon returns to its resting state.
Neuroscience
Threshold
The level of stimulation required to trigger a neural impulse.
Neuroscience
Resting Potential
The electrical potential of a neuron or other excitable cell relative to its surroundings when not stimulated or involved in passage of an impulse.
Neuroscience
Excitation
The residual physiological arousal left over from a previous event or experience
Neuroscience
Inhibition
The process of restraining one’s impulses or behavior, either consciously or unconsciously, due to factors such as lack of confidence, fear of consequences, or moral qualms
Neuroscience
Neural Circuits
A population of neurons interconnected by synapses to carry out a specific function when activated
Neuroscience
Interneurons
Neurons within the brain and spinal cords; they communicate internally and process information between the sensory inputs and motor outputs.
Neuroscience
Central nervous system (CNS) vs. Peripheral nervous system (PNS)
CNS: The brain and spinal cord
PNS: The sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
Neuroscience
Brain Stem
The oldest part and central core of the brain. The brainstem is responsible for automatic survival functions
Neuroscience
Localization of Function
Different cerebral cortical territories serve different functions, such as vision and language.
Neuroscience
Cerebellum
The “little brain” at the rear of the brainstem; function include processing sensory imput, coordinating movement output and balance, and enabling nonverbal and memory.
Neuroscience
Limbic System (hypothalamus, thalamus, amygdala, hippocampus)
Hypothalamus: Governs the endocrine system and is linked to emotion and reward.
Thalamus: Main control center. Directs messages to receiving areas in the cortex and transmits replies to the cerebellum and medulla.
Amydala: Linked to emotion.
Hippocampus: Helps process explicit (conscious) memories - of facts and events - for storage.
Neuroscience
The 4 Lobes
Frontal Lobes: Front of brain; speaking and muscle movements and making plans and judgement.
Parietal Lobes: Top back of brain; receives sensory imput for touch and body position.
Occipital Lobes: Bottom back of brain; receives information from the visual fields (eyes).
Temporal Lobes: Middle and bottom of brain; receives imput from auditory areas.
Neuroscience
Motor Cortex
Back of the brain; controls voluntary movements.
Neuroscience
Somatosensory Cortex
Front of the brain; registers and processes body touch and movements sensations.
Neuroscience
Left vs. Right brain hemisphere
The left hemisphere controls speech, comprehension, arithmetic, and writing.
The right hemisphere controls creativity, spatial ability, artistic, and musical skills
Neuroscience
Corpus Callosum
The large band of neural fiber connecting the two brain hemispheres and carrying messages between them.