midterm 1 Flashcards
pathways that conduct info to the primary visual cortex
streams
responsible for visual info/executing movements
dorsal stream
where does the dorsal stream travel
it flows from the primary visual cortex to the dorsal and posterior cortex
responsible for the perception (shape, color, faces) of objects
Ventral stream
The electrical impulse that travels to one axon to another (axon to axon communication)
Action potential
the temporary decrease of a neurons membrane potential
Hyperpolarization
the temporary increase of a neurons membrane potential
Depolarization
proteins that use ATP to transport sodium and potassium ions across the membrane
sodium-potassium pump
What is the formula for the sodium potassium pump?
3 sodium in, 2 potassium out
the steady state of a cell
Resting Membrane Potential
the direction pointing down towards the feet
Caudal
the direction pointing towards the forehead
Rostral
the front
Ventral
the back
dorsal
What is “Coronal” also reffered as?
the frontal plane
What is the coronal?
the frontal plane that divides the brain into front and back
Anterior
front
Prosterior
back
What is “Sagittal” reffered as
the vertical plane
the vertical plane that divides the brain into left and right sides
sagittal
divides the brain into a superior and inferior portion
Horizontal
Neuroscience
“The scientific study of the brain and nervous system, in health and in disease.”
It’s an interdisciplinary field including psychology, biology, chemistry, mathematics, etc”
Rationalism
Pursuit of the truth through reason.
Empiricism
pursuit of the truth through observation and measurement with emphasis on
experimentation.
Distal
Far from. Genes are distal to behavior.
Proximal
Close to. Anatomy is proximal to behavior
Galvani
An early scientist/empiricist who discovered behavior is a result of electrical impulse,
not pneumatics within the body. He first found this out by electrically stimulating the
muscle fibers of frogs and noticing movement.
Muller
Observed that electrical signals are differentiated by their pathways which allows
electrical signals to be used for motor function, sensation, etc.
Flourens
The first to use ablation, the surgical cutting or destruction of brain tissue, using
animal brains to determine what parts of the brain do what in a basic manner by
removing brain sections. Early ablation was not very precise but modern ablation uses
heat and chemicals for greater precision.
Broca
The first person to be credited with making the relationship between human brain
structure and human function. He discovered the function of a section of the brain
responsible in part for language pronunciation that is now known as Broca’s Area
Fritz and Hitzig
Used electrical impulses to examine brain function and what parts of the brain
do what without damaging or removing parts of the brain like Flourens did.
Neurotransmitters are released from one neuron to another at the…
synapse
What are neurotransmitters triggered by?
action potential
involved in emotion, memory, motivation, and behavior regulation
Limbic System
the conversion of light energy into electrical action potential to be interpreted by the brain
Visual pathway
responsible for our voluntary movements
Basal ganglia
What is the CN VII nerve?
It is the facial nerve (seventh cranial nerve)
What is the job of the facial nerve?
it is in charge of your facial expressions and sense of taste
What is the CN V nerve?
It is the trigeminal nerve (the fifth nerve) that regulates sensations in your face, taste, cheeks, and jaw movements
What is the CN X nerve
It is the Vagus nerve (the tenth nerve) that is responsible for your heart rate and digestion
What do cranial nerves do?
they play a role in sensations and your motor skill