Human growth and development Flashcards
Anabolism
the building-up aspect of metabolism or building to peak
catabolism
breaking-down aspect of metabolism or decline
Epigenetics
Nature vs nurture
Brain regions
Brain stem/hindbrain limbic region/midbrain cortex/forebrain
Brain stem/hindbrain
sleep, respiration, motor coordination and organization, and reflexes.
limbic region/midbrain
limbic system assists in various processes relating to cognition; including spatial memory, learning, motivation, emotional processing, and social processing
cortex/forebrain
controls body temperature, reproductive functions, eating, sleeping, and the display of emotions
Corpus callosum
connects the left and right hemispheres, cranial nerves start here
Limbic
amygdala, hypothalamus, hippocampus, thalamus
Cerebral cortex includes what parts of the brain :
occipital parietal temporal frontal
What does the occipital lobe do
vision and visual processing,
What does the parietal lobe do
Visuospatial Orientation, Somatosensation,
What does the temporal lobe do
Language Comprehension, Auditory Perception, auditory, permanent memory
What does the Frontal lobe do
Motivation, Planning, Inhibition, Motion, Language Expression
How is the nervous system divided
Central Nervous system > brain and spinal cord;
Peripheral nervous system>motor neurons and sensory neurons
What does the Cerebral Cortex do
Information Processing, Complex Cognition, Perception
What do the Subcortical Regions do
Basic Drives, Emotion, Memory, Fine Motor Skill
What does the Brainstem do
Alertness, Vital Functions
What does the Cerebellum do
controls Coordination
What lobe of the brain controls smell, movement, organization/planning/meta-cognition
Frontal lobe
What lobe of the brain controls auditory, permanent memory
Temporal lobe
What lobe of the brain controls spatial reasoning, touch
Parietal lobe
What lobe of the brain controls sensory through eyes
Occipital
Which division of the nervous system controls sympathetic and Parasympathetic
Peripheral nervous system (PNS)
Sympathetic nervous system does what process
ramps up - fight, flight, freeze
Parasympathetic nervous system does what process
calms - rest and digest
Basal Ganglia
Fine Motor Control
Limbic System
Emotional Valence and Reactions, Memory
Thalamus
Relay Station to Cortex
Hypothalamus
Hormonal, Vital Sign, and Sleep Regulation
Brainstem Divisions:
Midbrain, Pons, Medulla
Functions of the Brainstem:
Alertness, Facial Motor and Sensory Function, Cardiac and Breathing Regulation
Cerebellum Functions:
Motor Coordination, Primitive Learning and Emotional Networks
The Neuron parts
Cell Body (soma) Dendrites Axon
Cell Body (soma)
Cell nucleus,
organelles,
Production and storage of enzymes,
messenger molecules,
receptors
Dendrites
Short and branch-like, Receptive, at spine
Axon
Long fiber, Conductive, at terminal button
Electrical Conduction
Ligands bind receptors on the dendrite or soma,
Ligands: hormones, drugs, enzymes,
Activation of excitatory receptors results in action potential,
Electrical impulse movement along the axon: conduction
Chemical transmission
the primary way that nerves communicate with each other in the nervous system
Chemical transmission requires the following steps
- Synthesis of the neurotransmitter in the presynaptic nerve terminal.
- Storage of the neurotransmitter in secretory vesicles.
- Regulated release of neurotransmitter in the synaptic space between the pre- and post-synaptic neurons.
- The presence of specific receptors for the neurotransmitter on the postsynaptic membrane, such that application of the neurotransmitter to the synapse mimics the effects of nerve stimulation.
- A means for termination of the action of the released neurotransmitter.
Genetic disorders
Phenylketonuria Sickle cell anemia Tay-Sachs Turner syndrome Klinefelter’s syndrome
Phenylketonuria (PKU):
Inability to neutralize amino acid, phenylalanine
Sickle cell anemia:
abnormal red blood cells. In 1:500 African-American births
Tay-sachs:
CNS degeneration because of inability to metabolize fats in
Kleinfelter?s syndrome:
Extra X chromosome (XXY).
Behavioral learning theories of stimulus-response:
Classical conditioning Operant conditioning Social learning
Classical conditioning theorists:
Pavlov, Watson, Wolpe
Operant conditioning theorists:
Skinner, Thorndike
Social learning theorists
Bandura, Rotter
Classical Conditioning :
Pairing unconditioned stimulus (meat powder) with unconditioned response (salivation) through conditioned stimulus (tone, buzzer, bell).
Famous Classical Conditioning experiments :
Pavlov’s dogs,
Watson’s Little Albert and white mice,
Wolpe’s systematic desensitization
Operant conditioning:
a method of learning that employs rewards and punishments for behavior
Thorndike’s Law of Effect:
Reward = reinforcement
Positive Reinforcement Reward
increases desired behavior
Negative reinforcement
Removes aversive - increases desired behavior
Positive Punishment Aversive
Reduces undesired behavior
Negative Punishment Removes reward
reduces undesired behavior
Why use positive reinforcement?
Highly effective in teaching new behavior Highly effective in reducing problem behavior Pairing the counselor with reinforcers enhances the therapeutic relationship Effects are long-lasting
Premack principle (grandma?s law):
Only reward behavior after task completion,
Eat your vegetables before you get dessert
Differential Reinforcement
selectively reinforcing desired behaviors while withholding reinforcement for undesired behaviors.
One of the most effective ways to treat problem behavior
Provide reinforcement for behavior we want to increase
Withhold reinforcement for behavior we want to decrease (extinction)
Select an alternative to the problem behavior that serves the same function.
Be clear about what you want the client to do.
Examples of Differential Reinforcement:
Hitting for attention instead saying, “Look at me!”
Crying to escape task instead asking for a break,
Screaming to get iPad instead teaching “Can I have iPad?”
Primary reinforcer
things that motivate behavior because they satiate an individual’s basic survival needs (escape, attention, tangibles)
secondary reinforcers
conditioned reinforcers (money, tokens)
Extinction
the behavior ceases when the conditioned stimulus is presented, or the behavior becomes sporadic when the stimulus is present
spontaneous recovery
can only happen after extinction and usually follows a rest period where no stimuli are presented
Stimulus discrimination
the ability to distinguish between one stimulus and similar stimuli
eventual generalization
occurs when a stimulus that is similar to an already-conditioned stimulus begins to produce the same response as the original stimulus does
Token economy
a system in which the learner earns tokens by engaging in a targeted behavior
Intermittent reinforcement (slot machine effect)
the delivery of a reward at irregular intervals, a method that has been determined to yield the greatest effort from the subject
Extinction process
Step 1: We stop reinforcing a behavior Step 2: Extinction burst (gets worse before it gets better) Step 3: Because reinforcement is no longer available, the behavior decreases
Examples of Extinction:
Ignoring attention-maintained behavior, No longer reinforcing tantrums by withholding tangibles
Ethical considerations of Extinction
Increase in problem behavior may not be safe or manageable, Inconsistent use will increase problem behavior Extinction alone doesn?t teach an effective replacement behavior ? use with differential reinforcement