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Five quirks of memory that can mess with your sense of reality.

1. Déjà vu

‘Already seen’. The brief and fleeting experience of feeling as though a moment has been lived through previously.

2. Déjà vécu

‘Already experienced’. Déjà vécu describes a prolonged version of déjà vu, in which a holistic sequence of events is falsely remembered.

3. Déjà rêvé

‘Already dreamed’. The experience of feeling as though a waking moment has already been encountered during a dream.

4. Presque vu

‘Almost seen’. Known more commonly as the ‘tip of the tongue’ sensation, presque vu refers to that frustrating feeling of grasping for a word or fact, but then losing sight of it immediately.

5. Jamais vu

‘Never seen’. Commonly associated with amnesia or aphasia, jamais vu describes the experience of not recognising a word, place or person, despite having already encountered them.

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