focal cognitive seizure focal cognitive seizure with hallucination true true Characterized by the creation of composite perceptions without the presence of external sensory stimuli, these may be visual (e.g. formed images), auditory (e.g. hearing voices) or involve other sensory modalities, without change in awareness. The sensory phenomena may be accompanied by associated emotion or interpretation e.g. a formed visual image may be accompanied by fear, or may be experienced as persecutory or with paranoia (i.e. with unjustified suspicion / mistrust). https://www.ncbi.nlm.nih.gov/pubmed/22832396