Neuroscience 2 Flashcards
Dorsal
back
Ventral
front
rostral
top of axis
Caudal
bottom of axis
Medial
central, towards midline
Lateral
towards outside of brain
MRI
- Magnetic fields are generated that align hydrogen atoms – MRI uses the alignment to localize tissue precisely
- very precise, detailed picture of the brain
CT
series of X ray slices are taken
-relatively quick, inexpensive, low resolution picture of the brain
fMRI
measures relative use of oxygen
- uses many of the same principles of PET and MRI
- non-invasive & rough image of brain activation
PET
- uses invasive radioactive tracer of glucose/oxygen
- detects molecules used in metabolic processes
EEG
EEG provides rough image and ERP is more informative
Single Cell Recording
- Records a single neuron
- Pattern of firing reveals functional role
Provides information about a limited area of the brain
Hindbrain (RCMP)
Reticular Formation
Cerebellum
Medulla
Pons
Reticular Formation
arousal, motivation posture, balance
Re-tickle-ar formation, tickled your posture straightens
Cerebellum
facilitates coordinated movement
Bell, metronome that coordinates movement
Medulla
regulate breathing, digestion, and heart rate
Life would be DULL without breating and heart rate, meDULLa
Pons
role in movement, auditory perception, emotional processing
Midbrain
Tectum
Tegmentum
Tectum
a. Superior Colliculi: eye movements and visual reflexes
i. Eyes are your superior sense
Inferior Colliculi: auditory integration
Tegmentum
a. Red Nucleus: Motor Control
i. Red – stop sign – motor control
b. Substantia Nigra: reward related behaviours
Substance addiction – dopamine rush – reward seeking
Forebrain
Harry Potter Touches A Horcrux
Hypothalamus
4 f’s, fight, flight, feeding, reproduction
HYPE – when you get hyped up, heart rate speeds up – need to be alert
Pituitary
a. Anterior: releases stimulating hormones to regulate other important endocrine glands
b. Posterior: releases oxytocin and vasopressin
A is before P, anterior is rostral to posterior
Thalamus
processes and relays the information selectively to areas of cerebral cortex