Test 2 Flashcards
(164 cards)
basic jobs of the brain
processing: controls info by analyzing, coding, and storing info (have I heard this before? where did i store it?)
formulation: controls preparation of intention and behavior (creating the message we want to convey to others)
regulation: aids in the performance of the other two functions by maintaining brain’s energy level and awareness
functional magnetic resonance imaging (fMRI)
allows us to id brain structures involved in specific mental functions
non invasive
maps neural activities to specific structures according to changes in brain oxygen levels
examine brain activity while a person is involved in a specific processing task
magnetic resonance imaging (MRI)
provides structural scans of the brain
static pictures are provided
positron emission tomography (PET)
shows how organs and tissues in the body are functioning
inject small dose of radioactive chemical into vein and watch it travel through the body and is absorbed by tissues and organs being studied
cellular level metabolic changes in an organ or tissue are revealed
several regions of the brain identified are active during speech sound processing
Neuron
made of cell body, axon, dendrites, and synapse
cell body
contains the center (nucleus) which contains genes and chromosomes. the human brain uses 40,000 genes
axons and dendrites
receive and transmit electrochemical impulses from other neurons
synapse
site where two neurons meet. for neurons to communicate, the impulse must cross the synapse
central nervous system
brain and spinal cord
peripheral nervous system
cranial spinal nerves
carries information to and from CNS to innervate rest of body
cranial nerves
allows body to perform different actions (smiling, kicking a ball, and producing a sound)
there are 12 cranial nerves
spinal nerves
come out of spinal cord
without cranial and spinal cords acting together, we would not function appropriately
brain
initiates and regulates all motor, sensory, and cognitive processes
spinal cord
carries sensory and motor information to and from the brain and rest of the body
PNS
system of nerves connected to the brainstem and spinal cord
nerves carry sensory information to the CNS and motor commands away from the CNS. Controls nearly all voluntary and involuntary activity of the body
cranial nerves and spinal nerves
cerebrum
located on top of the brainstem and cerebellum
there is a left and a right hemisphere
lobes of the cerebrum
frontal, temporal, parietal, occipital
frontal lobes
activate and control fine and complex motor activities (speech)
control executive functioning
reasoning, problem solving, planning, hypothesizing, being socially aware
allows us to monitor behaviors and control information processing
Theory of Mind
an evolving ability to understand that other people have their own thoughts, beliefs, and feelings
requires social and interactional experience over many years to reach mature form
self awareness generally develops along with ToM
children with earlier theory of mind usually make more friends. mothers who talk about peoples feelings more have children with earlier ToM
Broca’s Area
motor cortex of the left frontal lobe.
responsible for fine coordination of speech output
expressive speech. physically producing that speech.
Wernicke’s area
in temporal lobe
What happens in producing a message?
message conceived in Wernicke’s area then transmitted through the arcuate fasciculus then to broca’s area which programs the motor cortex to signal the muscles for speech
What happens if there is damage to either broca’s, wernike’s, or the arcuate fasciculus?
Broca’s area: expressive speech. Physically producing that message
It would be hard to communicate if there is damage to any area.
Wernike’s: formulation and reception of speech aka comprehension
Arcuate fasciculus: would be more of a speech issue if damaged. Aka can not produce the message.
Occipital Lobe
Visual perception and visual processing