Biological psychology Flashcards
Biopsychologists study…
the relationship between brain activity and mental states
According to biopsychology, eating disorders…
have biochemical triggers
Human behaviors and feelings are primarily controlled by…
the brain, nerves and hormones
Neurons are a part of the…
nervous system
An example of neuroplasticity is…
a blind person having a heightened sense of smell
The two biological system that affect our behavior are…
The nervous system and the endocrine system
the nervous system is
an interconnected network of nerve cells allowing us to sense the things going on around us so we can react
The endocrine system includes
hormone-producing glands
The brain, nerves and hormones are responsible for
our thoughts, feelings and actions
Neuroplasticity is
the brain’s ability to reorganize in response to damage, new experience and new abilities
Neurotransmitters are
chemical signals bw neurons
A myelin sheath…
covers the axon and boosts the speed of signals.
The action potential occurs when
a neural impulse is traveling through the body
The all-or none law states that
once the neuron receives the signal, it has to fire it off. if there is no signal (no perception) there is no reaction.
The synaptic gap is
the space through which the signal flies from a neuron to another (less than 1 million of an inch)
Describe the neuronal process bw neurones
The signal (ball) flies over the synaptic gap (field) to another neuron (player) and the process repeats itself. The dendrite receives the chemical signal or neurotransmitter > excites the neuron > sodium ions enter the neuron and charge it > an electric current travels through the axon > and the terminal branches fire off the signal over the synaptic gap to the next neuron.
a refractory period is when…
neuron pumps out the sodium ions. Neuron sweats them all out and returns to his normal state, or resting potentia
The part of the neuron that receives signals is called a
dendrite
Your sensory neurons fire signals to_______ which fire signals off to_______
brain neurons motor neurons (for muscular reaction)
the neurotransmitter serotonin regulates
appetite, sex drive, moods and ability to sleep
Dopamine affects your ability to
concentrate and learn
react and move
During exercise, neurotransmitters called endorphins
reduce pain and stress
A neuron is a type of
nerve cell
A dopamine deficiency can cause
Parkinson’s disease