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Brandy Ellis charges a pacemaker-like device that was installed in her chest as part of an experimental treatment for depression, on Thursday, July 24, 2025, in Delray Beach, Fla. (AP Photo/Marta Lavandier)

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Brandy Ellis charges a pacemaker-like device that was installed in her chest as part of an experimental treatment for depression, on Thursday, July 24, 2025, in Delray Beach, Fla. (AP Photo/Marta Lavandier)

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Brandy Ellis, who had electrodes installed in her brain and pacemaker-like device installed in her chest as part of an experimental treatment for depression, sits at her home Thursday, July 24, 2025, in Delray Beach, Fla. (AP Photo/Marta Lavandier)

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Brandy Ellis checks the battery levels of a pacemaker-like device that was installed in her chest as part of an experimental treatment for depression, on Thursday, July 24, 2025, in Delray Beach, Fla. (AP Photo/Marta Lavandier)