Ventral Tegmental Area Flashcards
Ventral Tegmental
Area is Located between _____ and _____ nucleus.
substantia nigra; red nucleus
Ventral Tegmental
Area Synthesizes and releases
_____.
dopamine
Where does Ventral tegmental area projects to?
Mainly Nucleus accumbens; Hippocampal formation Amygdala
Hypothalamus
Cortex
Where does Ventral tegmental area receives input from?
Amygdala
Where is dopamine released?
Striatum (Includes substantia nigra)
Nucleus Accumbens is aka?
Ventral striatum
Nucleus accumbens receives input from?
Ventral tegmental area
What receptor does nucleus accumbens use?
D3
What is the important function of Nucleus accumbens?
Involved in behavioral responses to stimuli perceived as rewards. (Reward circuit)
Drugs of abuse activate which system?
Nucleus accumbens
_____ enhance dopamine release from
presynaptic terminals; block reincorporation in DA into
synaptic vesicles
Amphetamines
_____ potentiates the action of DA by binding to the
dopamine reuptake transporter blocking its reuptake
Cocaine
Opiates (heroin) activate specific _____ receptors
located on interneurons
inhibitory
_____ attaches to specific excitatory receptors on neuron
cell bodies in the VTA and induces elevated levels of
dopamine in the nucleus accumbens
Nicotine
_____ activate specific excitatory receptors on DA
nerve endings
Cannabinoids