[Solved] Frame Relay, ATM, and Ethernet are three devices used with PSDNs. Neural Activity: The electrical and chemical processes that occur within neurons, facilitating the transmission of signals in the nervous system. Cognitive Development: The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding. Stressful Life: A condition characterized by high levels of stress, often due to a combination of personal, professional, and social pressures. Erotic Wishes: Desires or longings that are related to sexual instincts and expressions of love.