Across
- 1. The brain region behind the forehead, involved in planning and judgment.
- 3. Analysis that begins with sensory input and moves up to higher processing.
- 4. A brief electrical charge that travels down the axon of a neuron.
- 6. The brain’s main excitatory neurotransmitter.
- 11. The main inhibitory neurotransmitter in the brain.
- 13. Neurons in the retina that transmit visual info to the brain.
- 16. In vision, the process by which the lens of the eye shifts to focus on a particular object.
- 17. The theory that sleep helps strengthen the neural connections for memory.
- 19. The band of fibers connecting the brain’s two hemispheres.
- 23. The transparent outer layer of the eye that helps focus light.
- 25. Photoreceptors in the retina responsible for color vision and detail.
- 26. Theory that nerve impulses match a tone’s frequency to determine pitch.
- 27. Brain region that controls hunger, thirst, body temperature, and the pituitary gland.
- 28. The brain and spinal cord, responsible for processing and coordination.
- 31. Branchlike parts of a neuron that receive messages.
- 33. Drugs that reduce neural activity and slow body functions.
- 34. Units of heredity made of DNA that code for proteins.
- 35. Cells that support and protect neurons, and assist in learning and thinking.
- 40. A neurotransmitter involved in muscle activation, memory, and learning.
- 41. A condition where a person responds to visual stimuli without conscious awareness.
- 43. The idea that the brain processes information on conscious and unconscious tracks.
- 46. The number of wave cycles per second in sound or light.
- 47. The sense of taste.
- 48. Chemical messengers that regulate body processes.
- 49. The part of the brain that processes auditory information.
- 50. A theory that dreams are the brain's attempt to make sense of random neural activity.
Down
- 2. A region in the frontal lobe responsible for speech production.
- 5. The relatively slow brain waves associated with relaxation and wakefulness.
- 7. A drug or chemical that inhibits or blocks neurotransmitter actions.
- 8. The brain’s outer layer, responsible for higher cognitive functions.
- 9. The nerve that carries visual information from the retina to the brain.
- 10. All the nerves outside the brain and spinal cord.
- 12. The part of the peripheral nervous system that controls involuntary functions.
- 14. Theory that spinal cord "gates" can block or allow pain signals.
- 15. Awareness of ourselves and our environment.
- 18. Part of the brain that processes sensory information like touch and body position.
- 20. Known for work on visual processing with Torsten Wiesel.
- 21. The smallest difference between stimuli detectable 50% of the time.
- 22. A hindbrain structure that helps coordinate movement and balance.
- 24. A drug or chemical that enhances the activity of neurotransmitters.
- 29. The oldest part of the brain, responsible for automatic survival functions.
- 30. The “master gland” that controls other glands in the endocrine system.
- 32. The minimum stimulation needed to detect a particular stimulus 50% of the time.
- 33. When a neuron's membrane potential becomes less negative, allowing it to fire.
- 35. The complete genetic material of an organism.
- 36. A condition marked by the inability to understand or express speech.
- 37. A brain structure involved in memory formation and storage.
- 38. The principle that a neuron either fires completely or not at all.
- 39. The height of a wave, which determines the loudness of a sound.
- 42. A neurotransmitter involved in reward, pleasure, and motor control.
- 44. A limbic system structure involved in processing emotions like fear and aggression.
- 45. The point where the optic nerve leaves the eye, creating a gap in vision.