Drugs and the Brain

Explore the variety of effects of different types of psychoactive drugs - from stimulants to depressants - on the brain's chemistry and function. Biology - Healthy Living - Learning Points. Drugs that affect the brain in a way that alters our emotions, behaviour or consciousness are said to be psychoactive. There are three main categories of psychoactive drugs: stimulants, depressants and hallucinogens. Some drugs can make you feel more energetic, while others decrease your emotions or make you see things that don't exist. Drugs can be very dangerous: they can distort reality and often lead to harmful addiction. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.