Frank Rosenblatt was an American psychologist and computer scientist, best known for his work in artificial intelligence. He developed the Perceptron, an early type of neural network, in the late 1950s. This model was designed to simulate the way the human brain processes information, allowing machines to learn from data. Rosenblatt's research laid the groundwork for modern machine learning and neural networks. His ideas influenced various fields, including cognitive science and robotics. Despite facing criticism in the 1970s, his contributions remain significant in the ongoing development of AI technologies.