Pg 4-6 Flashcards
the endocrine systems’ most influential gland, under the influence of the hypothalamus, this regulates growth and controls other endocrine glands
pituitary gland
an amplified recording of waves of electrical activity that sweeps across the brain’s surface, these waves are measured by electrodes placed on the skull
EEG
a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a certain task
PET
a technique that uses magnetic fields and radio waves to produce a computer generated image that distinguishes between the types of soft tissue in the brain
MRI
connected to the base of the brain stem, controls our blood pressure, heart rate, and breathing
Medulla
screens incoming info, and filters out irrelevant info, controls arousal and attention
Reticular Formation
the brains sensory switchboard
Thalamus
above the medulla, makes chemical involved w/ sleep and facial expressions
Pons
the little brain attached to the rear of the brain stem, controls coordination, fire muscles movements and balance
Cerebellum
associated with emotions like aggression and fear and drives such as hunger, thirst, and sex (Hippocampus, hypothalamus, and amygdala)
Limbic system
part of the limbic system that is involved in emotions, aggression, and fear
Amygdala
controls the metabolic functions of body temp., sex arousal, hunger, thirst, motivation/emotions, and the endocrine system –> the 4 f’s
Hypothalamus
part of the limbic system involved in learning and memory
Hippocampus
at side of brain above ears invloved in memory, perception, hearing
Temporal Lobe
lower back part of brain involved with processing visual info –> vision
Occipital Lobe
top of brain, discriminates between textures and shapes
Peripheral Lobe
located under forehead, involved with complex cognitive functions
Frontal Lobe
studied the effects of stimulation on the motor cortex
William Penfield
first lobotomy after a rod goes through his head; gives psych info on part of brain involved w/ emotions and reasoning
Phineasa Gage
Directs muscle movements involved with speech
Broca’s Area
involved in language comprehension
Wernicke’s Area
brain’s ability to modify itself after some kind of injury/illness
Plasticity
corpus callosum cut, not allowing info to travel to other side of brain
Split Brain
Responsible for higher thinking function, connects two side of brain
Corpus Callosum
logical, sequential tasks, solving math problems, verbal –> logical
Left hemisphere
Facial recognition, puzzle solver, emotional, artistic –> creative
Right Hemisphere
recieves info from skin surface and sense organs
sensory cortex
controls voluntary movements, on opposite side of body
motor cortex
lower brain, located at rear base of skull, responsible for reflective or automatic behaviors.
Hindbrain
Largest part of brain that controls what we think of as thoughts and reasons
Forebrain
located above Pons, integrates and relay sensory info to main part of brain
Midbrain
this occurs when positive ions enter the neuron, making it susceptible to fire an action potential
Depolarization
After a neuron has fired an action potential, it pauses for a short period to recharge, until it will fire again
Refractory period
the level of stimulation required to trigger a neural impulse
Threshold