here in NY (the one in the USA as opposed to other locations) this is no longer considered dissociation, its now called treatment/medication side effects. spaciness, memory problems, feeling numb, lack of affect(inability to show emotions) is part of side effects from ECT, here before ECT is done the treatment provider and client go through an information paperwork that explains all the side effects and to not worry about them, some are temporary, some are more long term but after care /therapy will address those side effects and how to get through the side effects.

maybe you and your therapist can go over things again, sometimes because of side effects a person who gets ECT does not always remember the pre- treatment paperwork, signatures and such. your treatment providers can show you the paperwork you had to sign before treatment started and help you to understand the side effects you are having and how to get through them and help you to develop strategies / coping tools to compensate for the longer term side effects.

As for your medications again your treatment providers can go through them with you again and even write the information down so that you know what they are for and what side effects you have are from them and which ones are from the ECT.

only your treatment providers can tell you what steps you need to do to take care of the side effects/problems you are having.