POWER TRANSMISSION APPARATUS, POWER RECEPTION APPARATUS, CONTROL METHOD PERFORMED BY POWER TRANSMISSION APPARATUS, CONTROL METHOD PERFORMED BY POWER RECEPTION APPARATUS, AND STORAGE MEDIUM

A power transmission apparatus includes a communication unit configured to wirelessly communicate with a power reception apparatus using an antenna, a power transmission unit configured to wirelessly transfer power to the power reception apparatus using the antenna, a detection unit configured to measure at least either a voltage or a current output from the antenna in a period where the transfer of the power is stopped and the communication by the communication unit is not performed, and determine that there is an object different from the power reception apparatus based on the result of the measurement, and a control unit configured to, if there is determined to be the object different from the power reception apparatus, restrict the transfer of the power.