Neural Foundations Slides Neural Foundations
The Biological Basis of Behavior
Module 01: Synaptic Circuits
Learning Objectives
1
Identify the anatomical structures of the central nervous system and their primary functions.
2
Describe the process of neural transmission and the role of neurotransmitters.
3
Analyze the relationship between specific brain regions and human cognitive processes.
"Everything psychological is simultaneously biological."
— David G. Myers
The Anatomy of a Neuron
Cellular Level
Dendrites
The 'listeners' — branching extensions that receive messages from other cells.
Axon
The 'speaker' — passes messages away from the cell body to other neurons.
Myelin Sheath
The insulator — speeds up the impulse transmission.
The nervous system is built from billions of these specialized cells, communicating via electrical impulses and chemical signals.
Action Potential in Motion
Visualizing the electrical charge that travels down an axon.
Embedded media
Resting Potential
-70 mV
Threshold
-55 mV
Peak
+40 mV
Chemical Messaging
Crossing the Synaptic Gap
Neurotransmitters
Chemical messengers that traverse the synaptic gaps between neurons.
Reuptake
The absorption by a presynaptic nerve ending of a neurotransmitter that it has secreted.
All-or-None Response
A neuron's reaction of either firing (with full strength) or not firing.
The Chemical Cocktail
Neurotransmitter Primary Function Imbalance Examples Dopamine Movement, learning, attention, emotion Schizophrenia (+), Parkinson's (-) Serotonin Mood, hunger, sleep, arousal Depression (-) Norepinephrine Alertness, arousal Depression (-) Endorphins Pain control, pleasure Opiate addiction affects supply
Cerebral Topography
Frontal Lobe
Judgment, planning, personality, muscle movement.
Parietal Lobe
Sensory input for touch and body position.
Occipital Lobe
Visual processing center.
Temporal Lobe
Auditory processing, memory, speech.
Interactive Exercise
If a person suffers damage to the frontal lobe, how might their daily life change?
Turn & Talk
The Emotional Core
The Limbic System
H
Hippocampus
Processing conscious, explicit memories.
A
Amygdala
Linked to emotion, especially fear and aggression.
H
Hypothalamus
Regulates thirst, hunger, temperature, and sex.
Can we truly understand the mind without first understanding the brain?
Consider the implications of neuroplasticity: if our experiences change our brain, does our "biology" ever truly stop evolving?
Neural Foundations Notes Neural Foundations
Synaptic Circuits | Module 01
Name: __________________________________
Date: ___________________________________
The Neuron: Building Blocks of the Mind
Complete the definitions and functional notes during the lecture.
1. Dendrites:
2. Axon:
3. Myelin Sheath:
4. Terminal Branches:
Sketch a diagram of a neuron here.
Action Potential & Transmission
Process Sequence:
1
Resting Potential: The neuron is polarized with a charge of _________ mV.
2
Depolarization: Sodium channels open, internal charge reaches _________ mV (Threshold).
3
Propagation: The electrical impulse travels down the length of the _________.
4
Release: Calcium triggers the release of ________________________ into the synaptic gap.
Key Term: Reuptake
Explain why this process is essential for neural efficiency:
Key Term: All-or-None
How does this principle relate to stimulus intensity?
The Master Control: Cerebral Geography
Structure Notes on Primary Function Frontal Lobe Parietal Lobe Occipital Lobe Temporal Lobe Amygdala Hippocampus
Case Study Reflection
Phineas Gage suffered damage primarily to his prefrontal cortex . Based on your knowledge of the frontal lobes, what specific cognitive and personality changes would you predict? How does this case support the idea of biological localization of function?
Synaptic Dilemma Seminar Worksheet University Psychology Seminar
The Synaptic Dilemma
Seminar 01: Neuroethics and the Biological Self
Objective
To analyze the intersection of neurobiology and human behavior through the lens of ethical responsibility and philosophical identity.
I. The Localization Debate
Franz Gall’s phrenology (the study of bumps on the skull) was discredited, yet modern fMRI studies often suggest specific functions "light up" in specific regions.
Prompt 1: The Modularity of Mind
If we can identify the specific neural circuit for "impulse control" or "empathy," should we treat criminal behavior as a "mechanical failure" rather than a moral choice? Explain your reasoning using biological and psychological arguments.
II. Chemical Personalities
Modern pharmacology allows us to manipulate serotonin, dopamine, and norepinephrine levels with high precision.
The "Prozac" Question
If a person's personality changes significantly after taking an SSRI (becoming more outgoing or less anxious), which version is the "true" self? The unmedicated brain or the chemically optimized one?
Enhancement Ethics
Should university students be allowed to use "nootropics" (neuro-enhancers) to increase dopamine-driven focus during exams? Is this different from a morning cup of coffee?
III. Consciousness and the Meat Machine
Francis Crick famously wrote: "You, your joys and your sorrows, your memories and your ambitions... are in fact no more than the behavior of a vast assembly of nerve cells and their associated molecules."
Collaborative Inquiry
Discuss with your seminar group: Does a purely biological explanation of the mind "cheapen" the human experience, or does it make it more remarkable?
Key Arguments for Reductionism
Predictability allows for medical treatment.
Removes "mysticism" from mental illness.
Aligns psychology with the hard sciences.
Key Arguments for Holism
The "whole" is greater than the sum of parts.
Subjective experience (qualia) is not measurable.
Ignores environmental and cultural context.
Synthesized Conclusion:
Write your group's consensus or individual reflection here...
Advanced Psychology Series | © 2026 | Synaptic Circuits Sequence
Perceptual Gateways Slides Perceptual Gateways
Sensation and the Construction of Reality
Defining the Divide
Sensation
The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment.
Bottom-Up Processing
Perception
The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
Top-Down Processing
Sensory Thresholds
Absolute Threshold
The minimum stimulation needed to detect a particular stimulus 50% of the time.
Example: A candle flame 30 miles away on a clear night.
Difference Threshold (JND)
The minimum difference between two stimuli required for detection 50% of the time.
Weber’s Law
To be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount).
Light
8%
Weight
2%
Visual Transduction
The Retina
The light-sensitive inner surface of the eye containing rods and cones.
Cones
Concentrated near the center (fovea); detect fine detail and color .
Rods
Peripheral retina; detect black, white, and gray; necessary for twilight vision .
The optic nerve carries information to the thalamus , then to the occipital lobe .
Gestalt: The Whole Picture
Proximity
Grouping nearby figures together.
Continuity
Perceiving smooth, continuous patterns.
Closure
Filling in gaps to create a whole object.
"The whole is different from the sum of its parts."
Sensory Interaction
The McGurk Effect: When vision overrides hearing.
Embedded media
If perception is a construction, do we ever see the world as it truly is?
Consider how your expectations (top-down processing) might blind you to physical realities (bottom-up processing) in your daily life.
Perception Portfolio Activity Perception Portfolio
Sensation Lab | Module 02
Student ID: __________________________
Lab Partner: ________________________
01
Testing Weber’s Law (Weight)
Procedure: One student (the subject) closes their eyes. The experimenter places a standard weight in their palm, then adds small increments. Record the Just Noticeable Difference (JND) .
Trial Base Weight JND Found 1 50g 2 200g
Analysis:
Did the JND increase proportionally with the base weight? Calculate the constant (k) if possible.
02
The Optic Disc & Blind Spot
The point where the optic nerve leaves the eye has no receptor cells.
+ ●
Close left eye, stare at +, move page until ● disappears.
Perceptual Filling-In:
When the dot disappeared, what did you "see" in its place? Explain how the brain uses top-down processing to maintain a seamless visual field.
03
Gestalt Analysis
Marketers use Gestalt principles to guide consumer attention. Choose a mental "ad" or logo and identify how it uses the following:
Figure-Ground
How does the object stand out from its surroundings?
Similarity
How are similar elements grouped to convey a message?
Closure
Does the design leave gaps for the consumer to "complete"?
Proximity
Are elements placed together to imply a relationship?
Synthesis Question
After conducting these tests, evaluate the following statement: "We see with our brains, not with our eyes." Provide evidence from your lab observations.
Sensory Systems Reference Guide Sensory Systems Guide
Critical Reference | Psychology 101
Sensing System Stimulus Energy Receptor Cells Brain Pathway Vision Light waves (Photons) Rods and Cones (Retina) Optic nerve → Thalamus → Occipital Lobe Hearing Sound waves (Vibrations) Hair cells (Cochlea) Auditory nerve → Thalamus → Temporal Lobe Touch Pressure, Temperature, Pain Meissner's corpuscles, etc. Spinal cord → Thalamus → Parietal Lobe Smell (Olfaction) Chemical molecules Olfactory receptor cells Olfactory bulb → Limbic System (bypass Thalamus) Taste (Gustation) Chemical molecules Taste buds (Papillae) Nerve → Thalamus → Temporal/Parietal
The Visual Pathway
1. Light entry
Cornea → Pupil/Iris → Lens → Retina
2. Transduction
Rods/Cones → Bipolar cells → Ganglion cells
3. Processing
Optic chiasm → Thalamus → Feature Detectors
The Paradox of Pain
Gate-Control Theory: The spinal cord contains a neurological "gate" that blocks pain signals or allows them to pass to the brain.
Why do we rub a bumped knee?
Rubbing stimulates large "gate-closing" fibers, which compete with small "gate-opening" pain fibers, reducing the perceived pain intensity.
Psychological Influences on Pain:
Attention/Distraction
Cultural expectations
Placebo effect (Endorphin release)
Sensory Interactions
McGurk Effect
Visual input overrides auditory input when signals conflict.
Sensory Adaptation
Diminished sensitivity as a consequence of constant stimulation.
Synesthesia
Condition where one sensory stimulus triggers multiple sensations.
Behavioral Blueprints Slides Behavioral Blueprints
The Science of How We Learn
Defining Learning
"A relatively permanent change in an organism's behavior or knowledge due to experience ."
Relatively Permanent
Distinguishes learning from temporary state changes (fatigue, drugs).
Change
Usually observed in overt behavior, but also occurs internally.
Experience
Distinguishes learning from innate behaviors (reflexes, maturation).
Classical Conditioning
Associative Learning
US
Unconditioned Stimulus: Triggers natural response.
UR
Unconditioned Response: Natural reaction.
NS
Neutral Stimulus: No natural response.
CS
Conditioned Stimulus: Learned trigger.
The Acquisition Process
"When the neutral stimulus is repeatedly paired with the unconditioned stimulus, it begins to elicit the same response."
Common Example: Hearing a notification sound and feeling a 'ping' of anxiety/anticipation.
Operant Conditioning
Reinforcement
Increases Behavior
Positive Reinforcement
Adding a desirable stimulus (e.g., getting a gold star).
Negative Reinforcement
Removing an aversive stimulus (e.g., stopping an alarm).
Punishment
Decreases Behavior
Positive Punishment
Adding an aversive stimulus (e.g., getting a ticket).
Negative Punishment
Removing a desirable stimulus (e.g., taking away a phone).
Observational Learning
Albert Bandura and Social Learning Theory
Embedded media
"We learn not only through our own actions, but by watching the consequences for others."
Partial Reinforcement Schedules
Fixed-Ratio
Reinforce after a set number of responses.
Example: Buy 10, get 1 free.
Variable-Ratio
Reinforce after unpredictable number of responses.
Example: Slot machines.
Fixed-Interval
Reinforce after a set time period.
Example: Tuesday discount days.
Variable-Interval
Learning Theory Lab Worksheet Learning Theory Lab
Behavioral Blueprints | Module 03
Student Name: ________________________
Section: _____________________________
I. Deconstructing Pavlovian Associations
Read the scenario below and identify the core components of the conditioning process.
"A chemotherapy patient feels nauseated every time they enter the hospital waiting room. The nausea was originally a reaction to the drugs, but after several visits, the room itself triggers the feeling."
Unconditioned Stimulus (US):
Identify the natural trigger...
Unconditioned Response (UR):
Identify the natural reaction...
Conditioned Stimulus (CS):
Identify the learned trigger...
Conditioned Response (CR):
Identify the learned reaction...
II. Operant Consequences Matrix
Classify each of the following scenarios as Positive Reinforcement (PR), Negative Reinforcement (NR), Positive Punishment (PP), or Negative Punishment (NP).
1. Buckling your seatbelt to make the annoying beeping stop.
2. A child gets a cookie for cleaning their room.
3. A student is benched from the game for unsportsmanlike conduct.
4. A speeding driver receives a $200 fine.
III. Social Learning Reflection
Vicarious Consequences
In Bandura's experiments, children were more likely to imitate the model if the model was rewarded for aggression.
1. How does this finding challenge the strict behaviorist view that learning only occurs through direct reinforcement of the subject?
2. Application: Consider the impact of "influencer" culture on social media. How do vicarious rewards shape the behavior of millions of followers?
Psychology Theory Lab | behavioral-blueprints-lesson | © 2026
Conditioning Cheat Sheet Reference Conditioning Cheat Sheet
Behavioral Frameworks Reference
Classical Conditioning
Mechanism: Association of two stimuli.
Sequence: Stimulus precedes the response.
Behavior Type: Involuntary/Reflexive (Respondent).
Key Figure: Ivan Pavlov.
Operant Conditioning
Mechanism: Association of behavior and consequence.
Sequence: Response precedes the stimulus (consequence).
Behavior Type: Voluntary (Operant).
Key Figure: B.F. Skinner.
The Operant Contingency Matrix
Reinforcement
Punishment
Positive
Positive Reinforcement
Give a reward for good grades.
Positive Punishment
Give a scolding for being late.
Negative
Negative Reinforcement
Taking away chores for hard work.
Negative Punishment
Taking away phone for backtalk.
Reinforcement Schedules
Fixed Ratio (FR):
High rate of response; pause after reinforcement. (e.g., piecework pay)
Variable Ratio (VR):
Very high, steady rate of response; hard to extinguish. (e.g., gambling)
Fixed Interval (FI):
Response rate increases as time for reinforcement nears. (e.g., studying for weekly quiz)
Variable Interval (VI):
Slow, steady rate of response. (e.g., checking for email)
A Common Misconception
Negative Reinforcement is NOT punishment. It always increases the likelihood of a behavior by removing something unpleasant. Think of it as "Reinforcement through Relief."
Social Synergy Slides Social Synergy
The Power of the Group
Attribution Theory
Dispositional Attribution
"They acted that way because that's just who they are." (Internal traits)
Situational Attribution
"They acted that way because of the pressure they were under." (External factors)
The Fundamental Attribution Error
The tendency to overestimate dispositional factors and underestimate situational factors when analyzing others' behavior.
Crucial Insight
Conformity & Influence
Solomon Asch
In the famous line test experiment, 75% of participants conformed to a clearly wrong answer at least once.
Normative Influence
Desire to be liked or avoid disapproval.
Informational Influence
Desire to be correct (using the group as a source of info).
Would you go against the crowd if you knew they were wrong?
Obedience to Authority
The Experiment
Stanley Milgram (1963) tested how far people would go to follow orders that involved harming others.
The Shock
Participants were told to deliver shocks up to 450 volts (labeled "XXX").
65%
Of participants obeyed instructions and delivered the maximum (lethal) voltage.
Authority in the room
Prestigious institution (Yale)
Victim in separate room
No role models for defiance
The Power of Roles
Philip Zimbardo's Stanford Prison Experiment
"What happens when you put good people in an evil place? Does the humanity win, or does the situation win?"
— Philip Zimbardo
Key Takeaways
Group Dynamics
Groupthink
The mode of thinking that occurs when the desire for harmony in a decision-making group overrides a realistic appraisal of alternatives.
Example: The Challenger Disaster.
Group Polarization
The enhancement of a group’s prevailing inclinations through discussion within the group.
Example: Online "echo chambers."
Social Experiment Design Worksheet Social Experiment Design
Social Synergy | Module 04
Lab Group: __________________________
Date: ________________________________
The Challenge
Your group must design a "mild" social experiment to test a specific principle of social influence (e.g., conformity, social loafing, or the bystander effect) in a campus setting.
I. Theoretical Framework
1. Social Principle to be Tested:
(e.g., "The influence of group size on conformity")
2. Research Hypothesis (If/Then):
If we manipulate [Independent Variable], then [Dependent Variable] will occur...
II. Experimental Methodology
Independent Variable:
Dependent Variable:
Control Variables:
Ethical Considerations
How will you ensure informed consent or debriefing? How will you minimize distress?
III. Behavioral Predictions
Sketch predicted data graph here
Rationale:
Why do you expect this outcome based on existing literature (e.g., Milgram, Asch, or Latané)?
Critique Section (Instructor Use Only)
Validity: /10
Ethics: /10
Creativity: /10
Social Psychology Laboratory | social-synergy-lesson | © 2026
Group Dynamics Reference Guide Group Dynamics Reference
Social Interaction Matrix | Module 04
Influence
Conformity
Adjusting behavior to coincide with a group standard.
Obedience
Compliance with an order from an authority figure.
Social Facilitation
Improved performance in the presence of others.
Interaction
Social Loafing
Less effort exerted when in a group than when alone.
Deindividuation
Loss of self-awareness in groups (mob mentality).
Altruism
Unselfish regard for the welfare of others.
Judgment
Prejudice
Unjustifiable (negative) attitude toward a group.
Stereotype
Generalized belief about a group of people.
Discrimination
Unjustifiable negative behavior toward a group.
Group Decision Making
Phenomenon Description Classic Example Groupthink Desire for harmony prevents realistic appraisal. Bay of Pigs invasion, Challenger disaster. Group Polarization Prevailing opinions become stronger after discussion. Internet forums, political rallies. Social Loafing Reduced individual accountability in a group. Tug-of-war experiments, group projects.
Helping Others
Reciprocity Norm
The expectation that we should return help to those who have helped us.
Social-Responsibility Norm
The expectation that we should help those who need our help.
Conflict & Bias
In-group Bias
Tendency to favor our own group over the "out-group."
Scapegoat Theory
Prejudice offers an outlet for anger by providing someone to blame.
The Mere Exposure Effect: The phenomenon that repeated exposure to novel stimuli increases liking of them. This applies to music, people, and even geometric shapes.
Clinical Crossroads Slides Clinical Crossroads
Understanding Psychological Disorders
The Four Ds of Disorder
Deviance
Behavior that is different, extreme, or unusual from social norms.
Distress
Unpleasant and upsetting to the person or others around them.
Dysfunction
Interfering with the person's ability to conduct daily activities.
Danger
Posing risk of harm to oneself or to those around them.
Perspectives on Etiology
The Medical Model
Disorders have physical causes that can be diagnosed, treated, and in most cases, cured through hospital therapy.
Biopsychosocial Approach
Biological, psychological, and social-cultural influences together produce psychological disorders.
Key Tool
DSM-5-TR
The American Psychiatric Association's diagnostic tool for classifying psychological disorders.
The Landscape of Disorders
Anxiety Disorders
GAD: Persistent, unexplained tenseness.Panic Disorder: Sudden episodes of intense dread.Phobias: Irrational, persistent fear of objects.OCD: Repetitive thoughts and actions.
Mood Disorders
Major Depression: Prolonged hopelessness and lethargy.Bipolar Disorder: Alternating between depression and mania.SAD: Depression during winter months.
Schizophrenia
Positive Symptoms
(Presence of inappropriate behaviors)
• Hallucinations (False perceptions)
• Delusions (False beliefs)
• Disorganized speech
Negative Symptoms
(Absence of appropriate behaviors)
• Flat affect (No emotion)
• Alogia (Reduced speech)
• Avolition (Loss of motivation)
Pathways to Healing
Psychodynamic
Uncovering unconscious conflicts from childhood.
Focus: Insight
Humanistic
Providing unconditional positive regard for self-growth.
Focus: Potential
Cognitive-Behavioral
Changing self-defeating thinking and maladaptive actions.
Diagnostic Case Files Activity Diagnostic Case Files
Clinical Crossroads | Module 05
Name: __________________________________
Section: _____________________________
Diagnostic Checklist (The 4 Ds)
Deviance
Distress
Dysfunction
Danger
01
Case Analysis: "The Silent Watcher"
"Marcus, a 22-year-old college senior, has begun to socially isolate. He recently reported hearing a voice that 'narrates' his daily actions. He believes his thoughts are being broadcast to the local news station. He has stopped attending classes because he feels 'too heavy' to move."
Primary Symptoms Observed:
Potential DSM-5 Classification:
Justification using the 4 Ds:
02
Case Analysis: "The Racing Heart"
"Sarah frequently experiences sudden, intense fear without warning. During these episodes, her heart races, she sweats profusely, and feels she is 'going to die.' She has begun avoiding the grocery store and public transport for fear of having another episode in public."
Primary Symptoms Observed:
Potential DSM-5 Classification:
Treatment Strategy Recommendation
Select a therapeutic approach (CBT, Humanistic, or Psychodynamic) and explain why it fits this case.
The Power of the Label
David Rosenhan’s "On Being Sane in Insane Places" study showed that once healthy people were admitted with a fake symptom (hearing a voice), hospital staff interpreted all their normal behaviors as part of their "illness." How can clinicians avoid this perceptual bias when working with patients?
Synthesize your ethical stance here...
Clinical Psychology Diagnostic Lab | clinical-crossroads-lesson | © 2026
Therapy Roadmap Reference Guide Therapy Roadmap Guide
Comparative Clinical Approaches | Module 05
Approach Primary Goal Techniques Used Focus Area Psychodynamic Resolve unconscious conflicts. Free association, dream analysis. Childhood & Past. Humanistic Promote self-growth/potential. Active listening, empathy. Present & Future. Behavioral Eliminate unwanted behavior. Exposure therapy, token economy. Observed Actions. Cognitive Correct distorted thinking. Rational-Emotive Behavior (REBT). Internal Beliefs. Biomedical Balance brain chemistry. Psychopharmacology, ECT, TMS. Biological Brain.
The CBT Triangle
Cognitive-Behavioral Therapy operates on the belief that thoughts, feelings, and behaviors are inextricably linked.
THOUGHTS
"I am a failure."
FEELINGS
Hopelessness, sadness.
BEHAVIORS
Avoidance, social isolation.
Therapeutic Ethics
Confidentiality
Legal and ethical duty to keep client info private unless harm is imminent.
Informed Consent
Clients must know the risks, benefits, and costs of treatment before starting.
Cultural Competence
Adapting treatment to align with the client’s cultural and social values.
"The curious paradox is that when I accept myself just as I am, then I can change."
— Carl Rogers
