Inclusion Criteria:  In order to be eligible to participate in this study, a subject must be mentally competent and meet all of the following criteria:  Objectified cardiac arrest between 3 months and 2 years before inclusion. Age 18 - 75 Cognitive impairments objectified by a score on the Montreal Cognitive Assessment (MoCA) ≤ 26 or abnormal scores on a neuropsychological assessment caused by low scores (more than 1,5 standard deviation below the mean of the norm group) on memory, attention, and/or executive functioning tasks Living independently (with minor help) Experiencing difficulties with more complex daily tasks (e.g. doing groceries, following conversations, etc.) Motivated to improve cognitive functioning and to participate in the study Proficient in Dutch to understand instructions, follow the training program and fill in the questionnaires Patients with a treatment indication for cognitive rehabilitation (as decided by a psychiatrist) Written informed consent  Exclusion Criteria:  A potential subject who meets any of the following criteria will be excluded from participation in this study:  Neurodegenerative disorder, or another brain disease known to impact cognition, such as stroke or dementia Substance abuse impacting cognition Psychiatric disorder in need of treatment Uncorrected visual or auditory deficiencies Not in possession of a computer or lack of computer skills Severe amnesia or aphasia Illiteracy In case of MRI contra-indications, such as an ICD or metallic implants, patients will be excluded from the MRI sub-study. The full list of contraindications can be found in the article of Ghadimi and Sapra (2020).