Biological Bases of Behavior

The Brain

Key Terms

Key People

Major Concepts

Neuroscientists use lesions, PET scans, MRIs, fMRIs, EEGs, and CT scans to study brain functions and activity.

Brain stem is the oldest part of the brain. It consists of the medulla, pons, and reticular formation.

Limbic system is linked to emotions, memory, and drives. It includes the hypothalamus and amygdala.

Cerebral cortex has 4 lobes: frontal, parietal, occipital, and temporal.

Motor cortex controls motions, sensory cortex controls senses.

Most of the cortex consists of association areas, which control different functions such as learning, remembering, thinking, and other higher-level functions.

Wernicke's Area and Broca's area (see chart and quizlet link above)

The brain's plasticity is its ability to reorganize itself in the case of damage to different areas of the brain. It can adapt other brain regions or create new areas for certain functions through neurogenesis, which is the creation of new neurons.

Dual processing is when the brain processes more than one thing at a time: in the conscious and unconscious mind.

Major Research

Split brain

A severed corpus callosum discontinues communication between the left and right hemispheres.

Research has determined that the left hemisphere is more verbal, and the right hemisphere is better at recognizing emotions and visual perception.

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