Neurological Disorders Lesson 5.1 What circuit do drugs affect in our brains?

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Presentation transcript:

Neurological Disorders Lesson 5.1 What circuit do drugs affect in our brains?

Do Now: What is addiction? How can scientists figure out what parts of the brain are involved in addiction?

Should animals be used in scientific research?

Comparing the Human and Rat Brain Human Brain Rat Brain

How do scientists figure out what parts of the brain are involved in addiction? Complete Lab on Paper.

Time (min) Total number of lever presses Rat ARat B Time (min) Total number of lever presses Stimulus Food * Time (min) Total number of lever presses Time (min) Total number of lever presses Rat CRat D * The Data

What parts of the brain are involved in addiction? Rat ARat B Rat CRat D cocainecontrol * *

The Brain’s Reward Circuit Prefrontal Cortex (PFC) Nucleus Accumbens (NAc) Ventral Tegmental Area (VTA)

The Brain’s Reward Circuit Human Brain Rat Brain VTA NAc PFC

Why do humans abuse drugs?

What is Addiction? Addiction is the continued compulsive use of drugs in spite of adverse health or social consequences.