In China it is called bèi guǐ yā (traditional Chinese: 被鬼壓; simplified Chinese: 被鬼压) which translates to "crushed by a ghost" in English. The Dutch call the presence a nachtmerrie, the night-mare. The "merrie" comes from the Middle Dutch mare, an incubus who "lies on peoples chests, suffocating them". This phenomenon is known among the Hmong people of Laos, who ascribe these deaths to a malign spirit, dab tsuam (pronounced "dah chua"), said to take the form of a jealous woman. Bangungot is depicted in the Philippines as a mythological creature called batibat or bangungot. This hag-like creature sits on the victims face or chest so as to immobilize and suffocate him. When this occurs, the victim is usually experiencing sleep paralysis. English names
Names in other languages
See also
Brugada syndrome
Night hag
Sleep paralysis
Sudden infant death syndrome
Sudden unexpected death in epilepsy
Sudden unexplained death in childhood
Yunnan sudden death syndrome

References
Further reading
Agence France Presse (8 April 2002). "Sleeping death syndrome terrorises young men". The Borneo Post. Center for Disease Control (23 September 1988). "Sudden Unexplained Death Syndrome Among Southeast Asian Refugees". MMWR. == External links ==
Logopenic progressive aphasia (LPA) is a variant of primary progressive aphasia. It is defined clinically by impairments in naming and sentence repetition. It is similar to conduction aphasia and is associated with atrophy to the left posterior temporal cortex and inferior parietal lobule. It is suspected that an atypical form of Alzheimers disease is the most common cause of logopenic progressive aphasia.Although patients with the logopenic variant of PPA are still able to produce speech, their speech rate may be significantly slowed due to word retrieval difficulty. Over time, they may experience the inability to retain lengthy information, causing problems with understanding complex verbal information. Some additional behavioral features include irritability, anxiety and agitation.Compared to other subtypes of primary progressive aphasia, the logopenic variant has been found to be associated with cognitive and behavioral characteristics. Studies have shown that patients with the logopenic variant perform significantly worse on tests of calculation than other primary progressive aphasia patients. Several logopenic variant patients, especially those with Alzheimers disease pathology, have also been found to perform poorly on memory tasks.Logopenic progressive aphasia is caused by damage to segregated brain regions, specifically the inferior parietal lobe and superior temporal regions. Difficulties in naming are produced from the thinning of the inferior parietal lobe. Damage to the dorsal pathways creates language deficiency in patients that is characteristic of logopenic progressive aphasia. See also
Aphasia
Dementia
Early-onset Alzheimers disease

References
Further reading
Harciarek M, Kertesz A (September 2011). "Primary progressive aphasias and their contribution to the contemporary knowledge about the brain-language relationship". Neuropsychol Rev. 21 (3): 271–87.