Unit 1 Flashcards
History of Cognitive Neuroscience, Structure and Function of Nervous System, Methods of Cognitive Neuroscience
(founder of clinical neuroscience)
laid groundwork for neurology and neuroanatomy, also named parts of the brain
Thomas Willis
british architect who created drawings of the human brain with Thomas Willis that remained the most accurate representations of the human brain for 200 years
Christopher Wren
the belief held by some such as Thales, that flesh-and-blood produce thoughts
Monism
the belief held by some such as Descartes, that the mind appears from elsewhere and is not the result of the machinations of the brain
Dualism
localizationist who studied convulsions of seizures and topographic organization
John Hughlings Jackson
discovered an area of the brain vital to speech production in the lesion of a patient - Broca’s Area
Paul Broca
discovered area of the brain vital to the ability to understand speech - Wernicke’s Area
Carl Wernicke
Where is speech production located?
Broca’s Area
Where is speech comprehension located?
Wernicke’s Area
Who was the famous patient of Broca and Wernicke whose lesion led to their discoveries?
Leborgne
Who is known for cyrotectontics?
Korbinian Brodmann
a system to divide the cerebral cortex according to cytoarchitectural organization
Brodmann Areas
two physicians that provided the first widely recognized piece of experimental evidence for what would eventually be known as the motor cortex through their experimentation on dogs and the contralateral muscles of the brain
Fitz and Hitzig
(a single cell or cytoplasmic mass containing several nuclei, formed by fusion of cells or by division of nuclei)
integrative brain function is based on the coexistence and cooperative actions of many interwoven and interacting sub-mechanisms
syncytium
asserts that nerve tissue is composed of individual cells, which are genetic, anatomic, functional and trophic units
Neuron Doctrine
nerve cells that have specific functions - responsible for info processing and transport, make up 2% of body weight
neurons
carry signals to and from the brain in order for movement
motor neurons
carry external stimuli and repurposes to electrical stimuli
sensory neurons
fires brain signals
interneurons
sensory - touch
unipolar
sensory - retinal, olfactory
bipolar
motor, pyramidal, purknje
multipolar
amcine cell
anaxonic
grey matter
soma cell/body
terminal buttons
release neruotransmitters
CNS - helps control neurons surrounding chemical environment, connects neurons to blood vessels - blood brain barrier, nourishes neurons and converts glucose
glial cells
myelin sheath, white matter, wrap axon, nodes of Ranvier
oligodendrocytes
What type of cells does multiple sclerosis damage?
oligodendrocytes
cells that protect the brain from invasion (immune system)
make up the brain-blood barrier
microglia (phagocyte)
epithelial cells that are responsible for the production and regulation of cerebrospinal fluid
ependmyl cells
cells responsible for myelin sheath production
Schwann cell
semipermeable barrier membrane between the circulatory system and the central nervous system - consists of capillary walls with open gaps that permit flow
blood-brain barrier
What and where is an area in the brain where blood-brain barrier is weaker?
Area Postrema (located in the medulla oblongata)
amino acid neurotransmitter - main excitatory neuron in the brain involved with ESPS, NMDA and ADE receptors
glutamate
the main inhibitory neurotransmitter involved in IPSPs
GABA (gamma - aminobutyric acid)
What medication increases GABA?
benzodiazpines
neurotransmitter involved in movement in the central nervous system - dorsolateral pons and basal forebrain
Acetylchloine
monoamine involved in movement, attention, learning and drug use - plays a key role in major subsystems of the central nervous system (nirostriatal , mesolimbic, msocoritcol systems)
Dopamine
involved in behavioral excitation - locus coeruleus
norepinephrine/noradrenaline
involved in regulation of mood, eating, sleep, arousal and pain - Raphe Nuclei
serotonin/5-HT
involved in wakefulness
histamine
direct antangonist
competitive binding
indirect antangonist
noncompetitive binding
How do you prolong neurotransmitter’s effects?
block reuptake
brain and spinal cord - encased by bone and cerebrospinal fluid
central nervous system
cranial and spinal nerves - peripheral ganglia
peripheral nervous system
front
anterior/rostral
back
posterior/caudal
top of brain - back of body
dorsal
bottom/underneath
ventral
towards the side
lateral
medial
towards the middle
ipsilateral
same side
contralateral
opposite side
superior
above
inferior
below
back of brain
caudal
protective sheath around the brain and spinal cord - consists of 3 layers… dura mater, arachnoid membrane, pia mater
meninges
How many lateral ventricles are in the ventricular system?
2
How do you access the 4th ventricle from the 3rd?
cerebral aqueduct
What are the purposes of the ventricles in the ventricular system?
to produce and store spinal fluid
What is the brain suspended in for support?
cerebrospinal fluid
What three chambers of the brain become ventricles?
forebrain, midbrain, hindbrain
largest section of the brain - consists of telencephalon and dicenphaon and in control of the Cerebral cortex
forebrain
frontal lobe, temporal lobe, occipital lobe, parietal lobe
lobes of the cerebral cortex
occipital lobe
occipital
temporal lobe
language, auditory, emotion
frontal lobe
thinking, sense of self
parietal lobe
navigating environment, mathematics
lateralization of the cerebral cortex
corpus callosum
limbic system
limbic cortex
solidifies and strengthens memory
hippocampus
amygdala
processes fear/threat detection
What two components of the brain are involved in spatial memory?
fornix and mammillary bodies
caudate nucleus + putamen
basal ganglia
receives sensory and motor input - action selections, timing, tasks
substantia nigra
What is an important neurotransmitter that aids in learning and goal oriented behavior?
dopamine
thalamus + hypothalamus
diencephalon
visual sensory info center - relays
thalamus (central part)
regulates heart, breathing, and endocrine system - homeostasis
hypothalamus
What are the 4 Fs in the diencephalon?
feeding, fighting, flighting, fornicating
superior colliculi
sight stimuli
inferior colliculi
auditory stimuli
composed of the reticular formation, periaqua-ductal gray matter, red nucleus - responsible for arousal, attention, reflexes
tegmentum
What components of the brain make up the tectum?
superior and inferior colliculi
What components of the brain make up the hindbrain?
cerebellum, pons, medulla oblongata
regulates cardiovascular system - cell body for cranial nerves
medulla oblongata
location of a majority of neurons - smooths movements
cerebellum
connects cerebellum to brainstem and handles input
pons
What make up the brainstem?
hindbrain and midbrain
takes in sensory info and relays it to the brain - composed of 5 sections of vertebrae
spinal cord
What are the two components of the peripheral nervous system?
somatic and autonomic
composed of the spinal and cranial nerves - afferent and efferent axons
somatic nervous system
composed of the sympathetic and parasympathetic divisions
autonomic nervous system
fight or flight
sympathetic nervous system
rest and digest
parasympathetic nervous system
color and word recognition (congruent and incongruent)
stroop test
encode, compare, decide & respond - serial processing
stern-berg’s memory comparison test
cerebral vascular accidents
strokes
narrowing or hardening of the blood vessels that occurs with old age
arteriosclerosis
the moving or breaking away of a blood clot - embolus/embolism
atherosclerosis
blood vessel expands and often bursts causing a brain hemorage
aneruryism
What is toxic to brain tissue?
blood
angiography
cardiovascular exam/scan
uncontrolled growth with no purpose (malignant or benign)
tumor (neoplasm)
malignant
cancerous
benign
noncancerous
How can tumors harm the brain?
through the infiltration of brain tissue or by pressure on the brain/brainstem
What type of malignant fast growing tumor is made up of glial cells?
gliomas
open v. closed head injury in which neurons inside the brain stretch or tear and do not always regenerate
traumatic brain injury
penetration of the head, skull, or brain and can be prone to infection of the object/site
open traumatic brain inury
injury to the brain by trauma
closed traumatic brain injury
concussions
mild traumatic brain injury
sudden excess of neuron activity
seizure
seizure disorder
epilepsy
What are the two types of seizures?
grand and petite mall
What are some methods to perturb neuron functions?
pharmacology, invasive stimulation methods, optogenetics, and noninvasive stimulation methods
What is an example of an invasive stimulation method?
deep brain stimulation
What are some examples of noninvasive stimulation methods?
transcranial magnetic stimulation (TMS), transcranial direct current stimulation (tDCS), and transcranial alternating current stimulation (tACS)
What scans provide a quicker and cheaper way to scan the gross anatomy of the brain using x-rays?
computed tomography (CT) or computed axial tomography (CAT)
What scan involves the interaction between radio frequency and a strong magnetic field?
(focuses on the hydrogen protons and their charge within the body)
magnetic resonance imaging (MRI)
variant of an MRI that measures direction and movement of water within the brain - can measure white matter tracts and the specific tracts to and from the brain
diffusion tensor imaging (DTI)
record action potentials
microelectrodes
mainly done in animals - visual research that looks at the receptive field and retinotopic maps - in humans looks at ‘grandmother cells’
single cell recording
noninvasive method recording cortical activity and measuring electrons activity of a population of neurons
electroencephalography (EEG)
What is also collected with an EEG?
event related potential
reliant on hemodynamic/metabolic responses and measures blood flow via oxygen and glucose metabolism - reveals localization of radioactive tracer
positron emission tomography (PET)
relies on blood-flow following neural activity and blood-oxygen-level-dependent signals - manipulated oxygen protons
functional magnetic imaging (fMRIs)
1mm-3mm replicate structures of the brain representing the space of a problem within areas of the brain
voxels