Unit 3

3. We see colors because we have three kinds of cells in our eyes that are most sensitive to different colors: red, green, and blue. These cells work together to let us see all the colors we do.
6. When you hear high-pitched sounds, it's because certain parts of your ear are vibrating a lot. Place theory explains how your brain knows which sounds are high-pitched based on where those vibrations happen in your ear.
8. This is your brain getting used to new things it sees or hears. Like if you wear glasses with a weird shape, at first it's strange but then your brain learns to see normally through them.
9. This is when your brain uses what it already knows to make sense of what you're seeing or hearing. It's like guessing what's in a blurry picture based on what you know should be there.
10. The difference threshold is the smallest change in something (like brightness or sound) that we can notice. It's like the smallest change in volume on your TV remote that you can tell.

1. Gestalt is all about how we see patterns and shapes. It's like when you see a face in clouds or notice a whole picture made up of smaller parts.
2. When you get used to a smell or a feeling, your body stops paying as much attention to it. It helps you focus on new things instead of stuff that's always there.
4. This theory is about how well we notice things, like sounds or sights, when there's a lot going on. It helps explain when we're good at noticing something important in a noisy environment.
5. Hue is what we call colors like red, blue, or green. It's what makes different colors look different from each other.
7. Bottom-up is the opposite. It's when your brain looks at all the small details first to figure out what something is. It's like putting puzzle pieces together to see the whole picture.