Concept 7A Flashcards
Neurotransmitters involved in behavior
1) Acetylcholine
2) Catecholamines
3) Serotonin
4) GABA, glycine, glutamate
5) Peptide neurotransmitters
Acetylcholine: found in what nervous system, its roles
In PNS: transmit nerve impulses to muscles.
In CNS: linked to attention & arousal.
Effect on behavior: increased arousal, enhanced cognition
Catecholamine: types, what they’re involved in
- Epinephrine & norepinephrine: control wakefulness
- NE more at local level, epinephrine farther - Dopamine: movement & posture
- High levels in basal ganglia
- Imbalanced in Schizophrenia
- Loss of dopaminergic neuron associated w/ Parkinson’s
Serotonin: type, roles
Type: monoamine/biogenic amine neurotransmitter
Roles: regulate mood, eating, sleeping, dreaming
GABA, glycine, glutamate
GABA: produces inhibitory post-synaptic potentials, stabilizing neural activity
Glycine: increase chloride influx to neuron
Glutamate: Excitatory neurotransmitter, opposite of glycine
Peptide Neurotransmitters types & roles
- Neuromoudulators (neuropeptides): more complicated chain of events in postsynaptic cell; slow/longer effects
- Endorphins / enkephalins: natural painkiller by the body
Methods for Studying the Brain
1) CT imaging
2) PET scan
3) MRI: magnetic field, tells about H atom
4) fMRI: like MRI but tells which structures are active
5) EEG (Electroencephalography)
6) Cortical maps: electrically stimulating and recording brain activity
7) rCBF: regional blood flow
Endocrine system on behavior
(other than knowing components of endocrine system on Kaplan),
- Behavior coordinated response to environment
- Hormones effect how we respond to attitude/personality.
- Cognitive behavioral therapy: Control what your body is doing physiologically with your mind.
Behavioral genetics
Innate behavior & learned behavior (adaptive value). Nature vs. nurture
Heredity
passing of traits between generations
Temperament
Combination of mental, physical, and emotional traits of a person
Innate behavior examples
reflex, orientation (kinesis and taxis), fixed action patterns
Regulatory Genes and Behavior
notion that genes are responsible for controlling behavior
Genetically based behavioral variation in natural population
Behavioral variation can mimic genetic variation in certain contexts, basis on natural selection
Prenatal development
Neurulation occurs.
Neural crest: form disparate tissues
Neural tube: form CNS, invaginate multiple times to become brain
Neural tube parts & what they become
1) Alar plate: become sensory neurons
2) Basal plate: become motor neurons
Motor Development
1) Rooting reflex: autonomic turning of head in direction of stimulus that touches the cheek
2) Moro reflex: fling out the arms when abrupt movements of heads occur
3) Babinski reflex: toes spread apart automatically when sole is stimulated
4) Grasping reflex: infant closes his/her fingers around object when placed in head
Motor skills: types
1) Gross motor skills: incorporate movement from large muscle groups & whole body motion
2) Fine motor skills: involve smaller muscles of the fingers, toes, eyes, providing more specific & delicate movement
Social Development
1) 7months - 1year: Stranger anxiety, separation anxiety
2) By age 5: social conformity to peers, romantic feelings develop
3) Age 6-12: friend circles of same gender
4) Teenage years: more desire for independence, cross-gender friendships become more common. Sexual relationships begin.
General Features of Developmental Milestones
1) Gross motor skills progress in head-to-toe order
2) Skills developed at core prior to extremities in motor skill development
Psychoanalytic (psychodynamic) theories of personality
assumption of unconscious internal states that motivate the overt actions of individuals & determine personality. By Freud and Jung.
Freud’s psychoanalytic theory
- Id: basic, primal, inborn urges to survive & reproduce. (primary process)
- Ego: operates according to reality principle (secondary process)
- Superego: personality’s perfectionist, judging actions and responding with pride at accomplishments and guilt at failures
- Instinct: eros (life instinct) and thantos (death instict)
- Defense mechanisms
Defense mechanisms
i. Repression: ego’s way of forcing undesired thoughts & urges to unconscious
ii. Suppression: deliberate form of forgetting
iii. Regression: reversion to earlier developmental state
iv. Reaction formation: suppress urges by unconsciously converting them to exact opposites
v. Projection: individuals attribute undesired feelings to others
vi. Rationalization: justification of behaviors in a manner that is acceptable to the self & society
vii. Displacement: transference of undesired urge from one person to another
viii. Sublimation: transformation of unacceptable urges into socially acceptable behaviors
Carl Jung’s take on psychoanalytic theory
Unconscious mind has 2 parts - personal and collective.
Mandala: symbolization of self.
3 dichotomies of personality