Behavioral Sciences Flashcards
Neurons in the Nervous system (3 types)
Motor Neurons (efferent) Interneurons Sensory Neurons (afferent)
Parasympathetic System
Part of the autonomic system
Rest and Digest
Sympathetic nervous system
Part of the autonomic system
Fight or flight
“Symptoms” of Parasympathetic nervous system
Constricted pupils Stimulation of saliva flow Heartbeat slows Stimulates peristalsis and secretion Contracts bladder Stimulates bile release
“Symptoms” of Sympathetic Nervous System
Dilates pupils Inhibits salivation Relaxes bronchi Accelerates heartbeat Sweating Inhibits bladder contraction
Organization of the Brain
Hindbrain
Midbrain
Forebrain
Hindbrain
Contains cerebellum, cerebrum, medulla oblongata, and reticular formation
Midbrain
Contains inferior and superior colliculi
Forebrain
Contains thalamus, hypothalamus, basal ganglia, limbic system, and cerebral cortex
Thalamus
relay station for sensory info
Hypothalamus
Maintains homeostasis
Integrates the endocrine system
Basal Ganglia
Smoothens movements and helps maintain postural stability
Limbic System
Controls emotion and memory.
Includes septal nuclei, amygdala, hippocampus, and fornix
Septal nuclei
Pleasure seeking
Amygdala
Fear and aggression
Hippocampus
Memory
Fornix
Communication with limbic system
Lobes of the Cerebral Cortex
Frontal
Temporal
Occipital
Parietal
Frontal
Executive function, impulse control, long term planning, motor function, speech production (brocas area)
Parietal
Sensation of touch, pressure, temperature, and pain
Spatial processing, orientation, and manipulation
Occipital
Visual Processing
Temporal
Sound processing
Speech perception (wernickes area)
Memory
Emotion
Influences on Behavior
Acetylcholine Epinephrine Norepinephrine Dopamine Serotonin GABA Glycine Glutamate Endorphins
Acetylcholine
Voluntary muscle control
Parasympathetic nervous system
Attention
Alertness
Epinephrine &
Norepinephrine
Fight or flight responses
Wakefulness
Alertness
Dopamine
Smooth movements
Postural stability
Serotonin
Mood
Sleep
Eating
Dreaming
GABA, Glycine
Brain Stabilization
Glutamate
Brain Excitation
Endorphins
Natural pain killers
Nature vs. Nurture
Debate regarding the contributions of genetics (nature) and environment (nurture) to an individuals traits
Sensation vs. Perception
Sensation: Conversion of physical stimuli into neurological signals
Perception: Processing of sensory info to make sense of its significance.
Sensory Receptors
Respond to stimuli and trigger electrical signals
Threshold
The minimum stimulus that causes a change in signal transduction
Weber’s Law
The just noticeable difference for a stimulus is proportional to the magnitude of the stimulus, and the proportion is constant
Response Bias
Examined using signal detection
Experiments with 4 possible outcomes: Hits, misses, false alarms, correct negatives
Adaptations
A decrease in response to a stimulus overtime
Visual Pathway
retina>optic nerve>optic chiasm>optic tracts>lateral geniculate nucleus of thalamus>visual radiations>visual cortex
Parts of the ear
Cochlea
Utricle and saccule
Semicircular canals
Cochlea
Detects sound
Utricle and Saccule
Detect linear acceleration
Semicircular canals
Detect rotational acceleration
Auditory Pathways
cochlea>vestibulocochlear nerve>medial geniculate nucleus of thalamus> auditory cortex
Bottom up processing
Data driven
Recognition of objects by parallel processing and feature detection
Slower but less prone to mistakes
Top down processing
Conceptual Driven
Recognition of an object by memories and expectations with little attention to detail
Faster, more prone to mistakes
Gestalt Principles
Ways the brain can infer missing parts of an image when it is incomplete
Habituation
The process of becoming used to a stimulus
Dishabituation
Occurs when a second stimulus intervenes, causing resensitization to the original stimulus
Observational Learning
The acquisition of behavior by watching others
Associative Learning
Pairing together stimuli and responses, or behaviors and consequences
Positive Reinforcement
When a stimulus is added and the behavior continues
Negative Reinforcement
When a stimulus is removed and the behavior continues
Positive Punishment
When a stimulus is added and the behavior stops
Negative Punishment
When a stimulus is removed and the behavior stops
Conscious Altering Drugs
Depressants Stimulants Opiates/Opioids Hallucinogens Marijuana
Depressants
Sense of relaxation and reduced anxiety
Stimulants
Increased arousal
Opiates/Opioids
Decreased reaction to pain; euphoria
Hallucinogens
Distortions of reality and fantasy; introspection
Marijuana
Has some features of depressants, stimulants, and hallucinogens (in large doses)
Encoding
The process of putting new information into memory
Piagets Stages of Cognitive Development
Sensorimotor Stage
Preoperational stage
Concrete Operational Stage
Formal operational stage
Sensorimotor Stage
Focuses on manipulating the environment to meet physical needs through circular reactions; object permanence ends this stage
Preoperational Stage
Focuses on symbolic thinking, egocentrism and centration
Egocentrism
Inability to imagine what another person thinks or feels
Centration
Focusing on only one aspect of a phenomenon
Concrete operational stage
Focusing on understanding the feelings of others and manipulating physical (concrete objects)
Formal Operational Stage
Focuses on abstract thought and problem solving
Selective Attention
Allows one to pay attention to a particular stimulus while determining if additional stimuli require attention in the background
Divided Attention
Uses automatic processing to pay attention to multiple activities at one time
Wernicke’s area
Language comprehension
Broca’s Area
Motor function of speech
Arcuate Fasciculus
Connects Wenicke’s and Broca’s areas
Motivation
The purpose or driving force behind our actions
Extrinsic Motivation
Based on external circumstances
Intrinsic Motivation
Based on internal drive or perception
Instinct Motivation theory
Innate, fixed patterns of behavior in response to stimuli
Arousal Motivation Theory
The state of being awake and reactive to stimuli. Aim for an optimal level of arousal for a given task (Yerkes-Dodson law)
Drive Reduction Motivation Theory
Individuals act to relieve internal states of tension
Maslow’s Hierarchy of needs
Prioritizes needs into five categories: Physiological needs (highest priority), safety and security, love and belonging, self-esteem, and self-actualization (lowest priority)
Seven universal emotions
Happiness Sadness Contempt Surprise Fear Disgust Anger
Theories of Emotion (3)
James-Lange
Cannon-Bard
Schachter-Singer
James-Lange Theory
Responses to Stimulus
First Response: Nervous System Arousal
Second Response: Conscious Emotion
Cannon-bard
Nervous System arousal and conscious emotion
Action
Schachter-Singer
Nervous system arousal and cognitive appraisal
Conscious Emotion
Stress
The physiological and cognitive response to challenges or life changes
Primary appraisal
Classifying a potential stressor as irrelevant, benign-positive or stressful
Secondary Appraisal
Directed at evaluating whether the organism can cope with the stress based on harm, threat, and challenge
Stressor
Anything that leads to a stress response
Three stages of general adaptation syndrome
Alarm
Resistance
Exhaustion
Self Concept
Sum of ways in which we describe ourselves past present and future
Identities
Individual components of our self-concept, related to the groups which we belong
Self Esteem
Our evaluation of ourselves
Self efficacy
The degree to which we see ourselves as being capable of a given skill in a given situation
Locus of Control
A self evaluation that refers to the way we characterize the influences in our lives
Schizophrenia
Psychotic disorder characterized by distortions of reality and disturbances in content and form of thought, perception, and behavior
Major Depressive order
Contains at least one major depressive episode
Persistent depressive order
A depressed mood for at least 2 years
Seasonal Affective Disorder
The colloquial name for major depressive disorder with seasonal onset, with depression occurring during winter months
Bipolar 1 disorder
Contains at least one manic episode
Bipolar 2 disorder
Contains at least one hypomanic episode and at least one major depressive episode
Cyclothymic Disorder
Contains hypomanic episodes with dysthymia
Generalized anxiety disorder
Constant disproportionate and persistent worry
Specific phobias
Irrational fears of specific objects
Social Anxiety disorder
Anxiety due to social or performance situations
Agoraphobia
Fear of places or situations where it is hard for an individual to escape
Panic Disorder
Recurrent attacks of intense overwhelming fear and sympathetic nervous system activity with no clear stimulus. Can lead to agoraphobia
Dissociative amnesia
Inability to recall past experience
Dissociative Fugue
A sudden change in location that can involve the assumption of new identity
Dissociative identity Disorder
Two or more personalities that take control of behavior
Depersonalization/derealization disorder
Feelings of detachment from the mind and body or from the environment
Social Facilitation
Tendency to perform at a different level of (better or worse) when others are around
Deindividualization
Loss of self awareness in large groups, can lead to drastic effects in behavior
Bystander effect
in a group, people are less likely to respond to a person in need
Peer pressure
Social influence placed on an individual by other individuals they consider
Group polarization
Tendency towards making decisions in a group that are more extreme than the thoughts of the individual group members
Groupthink
Tendency to make decisions based on ideas and solutions that arise within the group without considering outside ideas
Assimilation
One culture begins to melt into another
Multiculturalism
Encouragement of multiple cultures within a community to enhance diversity
Subculture
A group that distinguishes itself from the primary culture to which it belongs
Socialization
The process of developing and spreading norms, customs and beliefs
Norms
Boundaries of acceptable behavior within society
Stigma
Extreme disapproval or dislike of a person or group based on perceived differences
Deviance
Any violation of norms, rules, or expectations within a society
Conformity
Changing beliefs or behaviors in order to fit into a group or society
Compliance
Individuals change behavior based on the request of others
Obedience
Change in behavior based on a command from someone seen as an authority figure