The nature of fetal cognition is a complex and ongoing area of research. While fetuses do show signs of brain activity and respond to stimuli, the concept of "thinking in pictures" as we understand it in adults is likely not applicable to fetal development. Fetal brain development is a gradual process, with basic functions like reflexes developing first. Higher cognitive functions, including visual processing and imagination, develop much later, primarily after birth. The fetus does respond to sound, touch, and movement, and can even learn to recognize voices, but this is more akin to sensory processing than conscious thought or imagination. It's important to note that our understanding of fetal cognition is limited by the challenges of studying the fetal brain.