In recent years, the amount of information processed in society has increased dramatically, accompanied by advances in the functionality and density of information processing devices. Accordingly, new information processing technologies capable of achieving low power consumption have become increasingly important. This study explores the potential of information carriers other than the charge degree of freedom of electrons, and investigates neuromorphic devices utilizing spin, as well as develops new information carriers based on dielectric polarization. In the field of spintronics, which leverages the electron's spin, focusing on spin dynamics has revealed its contribution to information propagation, heat generation, and control in insulators, enabling the development of novel technologies. These phenomena were analyzed through high-precision and/or high-speed thermal response measurements, and the characteristic of spin dynamics responsible for information processing was elucidated (see figure). Visualization of thermal distributions using thermography and thermoreflectance techniques makes it possible to effectively utilize spin dynamics in neuromorphic computing. Furthermore, in recent years, attention has also been directed to the dynamics within dielectric materials, with attempts to develop new technologies for information utilization.