Motivation in Neuroscience

This set of flashcards covers essential vocabulary terms and definitions related to the neuroscience of motivation, including key concepts, theories, and psychological perspectives.

Motivation

Processes that initiate, direct, and sustain goal-directed behavior.

Reflex

An unconscious and automatic response, typically hardwired and requiring no prior experience.

Reaction

A more complex behavioral response than reflex, involving the whole organism and requiring CNS control.

Action

Conscious and deliberate behavior that is flexible, goal-directed, and driven by a combination of external stimuli and internal factors.

Habit

An action that has become automatic, often triggered by certain stimuli and requiring less cognitive effort.

Dopamine

A neurotransmitter that is crucial for signaling reward, predicting outcomes, and reinforcing behaviors.

Addiction

Compulsive use of a substance or behavior despite harmful consequences, characterized by loss of control and chronic relapse.

Amotivation

A state of reduced initiation of goal-directed behavior, often associated with depression and other motivational dysfunctions.

Drive Reduction Theory

The theory that organisms act to reduce internal drives caused by physiological needs.

Incentive Theory

The theory that external stimuli and rewards energize behavior and motivate actions.

Motivation

Processes that initiate, direct, and sustain goal-directed behavior

Reflex

An unconscious and automatic response, typically hardwired and requiring no prior experience.

Reaction

A more complex behavioral response than reflex, involving the whole organism and requiring CNS control

Action

Conscious and deliberate behavior that is flexible, goal-directed, and driven by a combination of external stimuli and internal factors

Habit

An action that has become automatic, often triggered by certain stimuli and requiring less cognitive effort.

Dopamine

A neurotransmitter that is crucial for signaling reward, predicting outcomes, and reinforcing behaviors.

Addiction

Compulsive use of a substance or behavior despite harmful consequences, characterized by loss of control and chronic relapse.

Amotivation

A state of reduced initiation of goal-directed behavior, often associated with depression and other motivational dysfunctions.

Drive Reduction Theory

The theory that organisms act to reduce internal drives caused by physiological needs

Incentive Theory

The theory that external stimuli and rewards energize behavior and motivate actions.

Mesolimbic Dopamine Pathway\n\n

The brain’s primary reward circuit, connecting the Ventral Tegmental Area (VTA) to the Nucleus Accumbens (NAcc) and Prefrontal Cortex (PFC). It drives reward pursuit, goal initiation, and motivation.

Ventral Tegmental Area (VTA)\

A midbrain region that produces dopamine and sends signals to the NAcc and PFC to initiate reward signaling and motivational drive.

Nucleus Accumbens (NAcc)\

The region that translates dopamine release into motivation — gives experiences a feeling of “wanting” or desire, energizing goal-directed behavior.\

Dopamine (DA) Hypofunction\n\n

Reduced dopamine activity causing apathy, anhedonia, and poor effort initiation; seen in Parkinson’s disease and depression.\n\n

Prefrontal Cortex (PFC)\n\n

Higher-order region integrating emotion, reward, and cognition to guide behavior; includes dlPFC, vmPFC, OFC, and ACC.\n\n

Dorsolateral Prefrontal Cortex (dlPFC)\n\n

Controls executive functions like planning, self-control, and aligning behavior with long-term goals.\n\n

Ventromedial Prefrontal Cortex (vmPFC)\n\n

Integrates emotion and value to guide decision-making; involved in social judgment and reward evaluation.\n\n

Orbitofrontal Cortex (OFC)\n\n

Evaluates reward value and punishment; key for adapting behavior to changing emotional or social contexts.\n\n

Anterior Cingulate Cortex (ACC)\n\n

Monitors conflict and effort, signaling when increased control or motivation is needed.\n\n

Self-Determination Theory (SDT)\n\n

Motivation increases when autonomy, competence, and relatedness needs are satisfied (Deci & Ryan).\n\n

Stress Systems (SAM & HPA)\n\n

Includes SAM (Sympathetic-Adrenal-Medullary) for fast release of epinephrine (fight-or-flight) and HPA (Hypothalamic-Pituitary-Adrenal) for slower cortisol release for sustained stress response.\n\n

Chronic Stress Effects\n\n

Prolonged cortisol can cause hippocampal shrinkage, reduced feedback inhibition, and increased anxiety.\n\n

Addiction (Motivational Aspect)\n\n

A disorder of hijacked motivation — the reward system overvalues drug-related cues, reinforcing compulsive seeking.\n\n

Apathy\n\n

Lack of motivation or emotional engagement due to disrupted dopamine signaling or prefrontal control deficits.\n\n

Anhedonia\n\n

Inability to experience pleasure, often linked to NAcc or dopamine pathway dysfunction.\n\n