Unit 2 Flashcards
EEG
Readout of waves in brain
CT
X Ray pics revealing brain damage
PET
Shows brain activity by consumption of glucose
MRI
aligns spinning atoms of brain, pics of soft brain tissue
FMRI
Reveals structure and functioning
Our brain is wired by
Our experience
Biologist psychologists
Study biological activity and psychological events
Neuron
Basic building block of nervous system
Neurons carry incoming information from sensory receptors to the brain and spinal
Sensory neurons
Neurons that carry outgoing information from brain to spinal cord to muscles and glands
Motors neurons
Neurons within the brain and spinal cord that communicate internally
Interneurons
Insulates accent and speeds of process
Myelin sheath
Action potential
Electrical charge that travels down the axon
Not mixing, before the message held out and sent
Resting potential
Generate electricity from chemical events…
Involves exchange of ions
Outside axon membrane vs inside
O: positive ions
I: negative ions
Chemical messengers
Neurotransmitters
Meeting point between neurons
Synapse
When action potential reaches the end of the axon…
Sends neurotransmitters
Swelling on brainstem is…
Medulla , controls heart beat and breathing
Brainstem parts
Medulla and pons
Pons
Controls movement
How do neurons work together
Neural networks, feedback strengthens connections
Simple motor neuron response
Reflex
What is your bodies slow chemical communication system
Endocrine
What is endocrine system
System of glands that secrete hormones
Chemical messengers that affect tissues touches the brain, influence our interest on food aggression and sex
Hormones
Adrenal glands
Release epinephrine and norepinephrine, increase heart rate ,BP, energy source
Pituitary gland
Produces hormones begins during puberty
Controlled by hypothalamus
Growth
Main gland
Thyroid gland
Metabolism
Mimics natural chemical
Agonist
Blocks natural chemical
Antagonist
Weed allows more what
Dopamine, agonist
Cocaine
Blocks dopamine
Alcohol
Mimics gaba
Prevents glutamates from leaving
LSD
Mimics serotonin
Heroin
allows more dopamine
Agonist
Brains switchboard, all senses but smell it sends out
Thalamus
Cerebellum
Little Brain, helps judge time, emotions, and pick up sounds and textures
Voluntary movements
What are the older brain structures
Cerebellum thalamus and brain stem because they’re done without conscious effort’s
Limbic system
Emotions, fear, aggression
Hypothalamus, pituitary gland, amygdala, hippocampus
HHAP
Amygdala
Aggression and fear, shape Altered over time
Hypothalamus
FFFF food Forhixation Fight flight. Monitors blood chemistry Hunger thirst body temp
Band of fibers are on the hemispheres.
Tell us when to release sex hormones, turn hypothalamus, pituitary gland to release hormones
Cerebral cortex
Lateral hypothalamus versus ventromedial hypothalamus
L: stimulates huger
V: suppresses hunger
Hypothalamus
Pleasure , dopamine released
Worker to neurons provide nutrients
Glial cells
Speaking, muscle movements, making plans, judgment, personality
Frontal lobe
Touch sensory input as well as body position
Parietal
Occipital
Visual
Auditory, receives from opposite lobe
Temporal
Different parts of the brain are responsible for voluntary movements, send out messages
Motor cortex
Receives messages from brain from different areas
Sensory cortex
Aphasia, controls muscles in speech, control of speaking words
Broca’s area
Hearing words and understanding language
Wernickes area
Able to take visual representations and read them aloud, if damaged an individual still can read and understand language just not out loud
Angular gyrus
Permanent damages in the brain….
Neurons won’t regenerate
Neurogenesis
Formation of new neurons, happens deep in brain
Left and right hemispheres brought together by…
Corpus callosum, band of accent fibers.
Weigh effects and combination of hereditary and environment
Behavior geneticists
Environment
How we read face expressions
Threadlike made of DNA contain genes
Chromosome
Biochemical units of hereditary that will make up the chromosomes
Genes
Complete instruction for making an organism, consisting of all genetic material in organisms chromosome
Genome
Due to this humans are very close
DNA
What starts you up, puts you to bed
Pons
Talking
Cerebrum
Decision
Frontal
Walking
Cerebellum
Variation among individuals that we can attribute to genes
Heritability
Studies molecular structure and function of genes
Molecular genetics
Evolutionary psychologists
Focus on what makes us so much alike
Random series in gene replication
Mutations