This paper attempts to recover a long neglected chapter in the philosophy of language as it developed in antiquity--The ancient greek stoics' teaching on ambiguity. Although the overwhelming majority of the doxographical accounts of this subject have been lost, Sufficient entries have survived to allow a partial description of the stoic doctrine. What is intriguing about the stoics' teaching is the subtlety of some of the kinds of ambiguity they include in their catalogue. The types of ambiguity that they identify (...) are thoroughly discussed and analyzed. Also, It is argued that the stoics discuss ambiguity, At least in part, As a means of resolving certain fallacies or sophisms, For example, The nobody. (shrink)

BackgroundWith the emergence of Brain Computer Interfaces, clinicians have been facing a new group of patients with severe acquired brain injury who are unable to show any behavioral sign of consciousness but respond to active neuroimaging or electrophysiological paradigms. However, even though well documented, there is still no consensus regarding the nomenclature for this clinical entity.ObjectivesThis systematic review aims to 1) identify the terms used to indicate the presence of this entity through the years, and 2) promote an informed discussion (...) regarding the rationale for these names and the best candidates to name this fascinating disorder.MethodsThe Disorders of Consciousness Special Interest Group of the International Brain Injury Association launched a search on Pubmed and Google scholar following PRISMA guidelines to collect peer-reviewed articles and reviews on human adults published in English between 2006 and 2021.ResultsThe search launched in January 2021 identified 4,089 potentially relevant titles. After screening, 1,126 abstracts were found relevant. Finally, 161 manuscripts were included in our analyses. Only 58% of the manuscripts used a specific name to discuss this clinical entity, among which 32% used several names interchangeably throughout the text. We found 25 different names given to this entity. The five following names were the ones the most frequently used: covert awareness, cognitive motor dissociation, functional locked-in, non-behavioral MCS and higher-order cortex motor dissociation.ConclusionSince 2006, there has been no agreement regarding the taxonomy to use for unresponsive patients who are able to respond to active neuroimaging or electrophysiological paradigms. Developing a standard taxonomy is an important goal for future research studies and clinical translation. We recommend a Delphi study in order to build such a consensus. (shrink)