Friday, 14 March, 2025 9:44 PM
Conditioning
• Overview: Conditioning, a fundamental concept in psychology, refers to learning processes
where associations are formed between stimuli and responses. This can involve either
associating stimuli (classical conditioning) or modifying behaviours through consequences
(operant conditioning).
• Classical Conditioning: A type of learning where a neutral stimulus becomes associated with a
meaningful stimulus, leading to a learned response.
• Operant Conditioning: A type of learning where behaviors are strengthened or weakened
based on their consequences.
• Unconditioned Stimulus: A stimulus that naturally triggers a response without prior learning.
• Unconditioned Response: A natural, automatic response to an unconditioned stimulus.
• Reinforcer: A consequence that increases the likelihood of a behaviour occurring again.
• Punisher: A consequence that decreases the likelihood of a behaviour occurring again.
Brain Structures and Emotion
• Overview: Emotions are complex phenomena that arise from the coordinated activity of
various brain structures. Different regions of the brain play unique and crucial roles in
processing, regulating, and expressing emotions, ranging from conscious feelings to
physiological responses. The interplay between these structures allows for a diverse range of
emotional experiences and behaviors.
• Neocortex:
○ Responsible for higher-order cognitive functions, including the conscious experience of
emotions.
○ Plays a role in the interpretation of emotional stimuli.
○ Involved in the regulation and modulation of emotional responses.
• Hippocampus:
○ Critical for the formation of new memories, including those associated with emotional
experiences.
○ Contextualizes emotional events.
○ Plays a role in regulating the hypothalamic-pituitary-adrenal (HPA) axis.
• Amygdala:
○ Central to the processing of emotions, particularly fear and aggression.
○ Detects and responds to threats and rewards.
○ Plays a role in emotional learning and memory.
• Hypothalamus:
○ Regulates basic bodily functions, including the physiological responses associated with
emotions (e.g., heart rate, hormone release).
○ Links the nervous system to the endocrine system.
○ Influences motivated behaviors, such as feeding and sexual activity, which have strong
emotional components.
• Basal Ganglia:
○ Involved in the initiation and control of movement.
○ Contributes to the experience and expression of emotions, especially in the context of
reward, motivation, and habit formation.
• Midbrain:
○ Contains the ventral tegmental area (VTA), which is a key component of the reward
system.
○ Involved in the processing of pleasurable stimuli and the experience of motivation.
• Brainstem:
Regulates basic life functions, such as breathing and heart rate.
Lecture 3 Page 1