Assessment of Emotional Memory During Transient Global Amnesia

Inclusion Criteria: * Subject with no history of transient global amnesia or neurological or psychiatric pathology. * Patients with a transient global amnesia according to the criteria of Hodges and Warlow (1990) in the acute phase (i.e. within 24 hours after the onset of the stroke), accompanied by a trusted person * The patient must have given their free and informed consent and signed the consent form * The patient must be a member or beneficiary of a health insurance plan Exclusion Criteria: * The subject is participating in another study, or is in a period of exclusion determined by a previous study * The subject refuses to sign the consent * It is impossible to give the subject informed information * The patient is under safeguard of justice or state guardianship * The patient is pregnant or breastfeeding * Presence of a focal neurological pathology that may explain the symptoms, history of epilepsy or psychiatric disorders. * Hypersensitivity to iodinated contrast media. * Known allergy to 18-FDG. Non-inclusion criteria concerning control subjects: * Presence of disorders on neurological assessment * Presence of cognitive disorders on the neuropsychological assessment (z-score \<-1.65 on the RBANS or on the Stroop test). Exclusion criteria for the target population: • Patients will be excluded after the 1st neuropsychological assessment if episodic memory tests show complete recovery from anterograde amnesia.