Psychology Fundamentals: Memory, Gender, and Perception

The Case of Henry Molaison (Patient H.M.)

Henry Molaison, most known as patient H.M. (1921–2008), suffered from severe seizures. In an attempt to cure his epilepsy, he underwent a bilateral medial temporal lobectomy, during which his hippocampus was removed. At the age of 27, following this major surgery, his seizures ended, but his ability to form new explicit memories was lost. While his epilepsy was controlled, he suffered from heavy anterograde amnesia. His working memory and implicit memory remained intact, but he could not add new events to his explicit memory. His old memories remained untouched, but from that day forward, he was forced to "live in the present."

His case is arguably the most influential in the study of memory and has been extensively researched since his passing.

Biological and Social Differences Between Genders

Research into the fundamental differences between men and women examines biological, social, and environmental factors. These differences often begin at the 23rd pair of chromosomes (XX or XY).

Social Power

Globally, men are often perceived as more dominant, forceful, and independent, while women are frequently viewed as more submissive, nurturing, and socially connected. In many cultures, men possess attributes that help them attain greater social power.

Social Connection

There are significant differences in play styles between genders. Boys tend to focus on the activity and are more competitive, whereas women focus on connection and conversation. Female play is typically more social, less competitive, and invites feedback that mimics social relationships.

Mental Health

Chromosomal differences contribute to variations in mental health outcomes. Women are more likely to experience depression, anxiety, and eating disorders, while men are more likely to be diagnosed with autism, color blindness, ADHD, and antisocial personality disorder.

Key Psychological Concepts

• Chunking: Organizing items into familiar, manageable units; this often occurs automatically.
• Explicit Memory: Requires conscious thought (facts).
• Implicit Memory: Acquired and used unconsciously.

Visual Information Processing

1. Light entering the eye triggers photochemical reactions in the rods and cones of the retina.
2. Chemical reactions activate bipolar cells.
3. Bipolar cells activate ganglion cells, the axons of which converge to form the optic nerve. This nerve transmits information to the visual cortex.

• Sensory Adaptation: Diminished sensitivity as a consequence of constant stimulation.
• Subliminal Exposure: Evidence suggests that immediate stimuli can affect behavior and influence us subconsciously.