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In both regions the languages retain a labialized velar series (e.g. [kʷ], [kʼʷ], [xʷ], [w] in the Pacific Northwest) as well as uvular consonants. [8] In the languages of those families that retain plain velars, both the plain and labialized velars are pre-velar, perhaps to make them more distinct from the uvulars which may be post-velar ...
Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflected by objects in the environment.
The visual system is organized hierarchically, with anatomical areas that have specialized functions in visual processing. Low-level visual processing is concerned with determining different types of contrast among images projected onto the retina whereas high-level visual processing refers to the cognitive processes that integrate information from a variety of sources into the visual ...
Terms like pre-velar (intermediate between palatal and velar), post-velar (between velar and uvular), and upper vs. lower pharyngeal may be used to specify more precisely where an articulation takes place. However, although a language may contrast pre-velar and post-velar sounds, it does not also contrast them with palatal and uvular sounds (of ...
Dorsal consonants are consonants articulated with the back of the tongue (the dorsum). They include the palatal, velar and, in some cases, alveolo-palatal and uvular consonants. . They contrast with coronal consonants, articulated with the flexible front of the tongue, and laryngeal consonants, articulated in the pharyngeal cav
Unlike other uvular consonants, the uvular trill is articulated without a retraction of the tongue, and therefore doesn't lower neighboring high vowels the way uvular stops commonly do. Several other languages, including Inuktitut , Abkhaz , Uyghur and some varieties of Arabic , have a voiced uvular fricative but do not treat it as a rhotic ...
Two or more consonant sounds may appear sequentially linked or clustered as either identical consonants or homorganic consonants that differ slightly in the manner of articulation, as when the first consonant is a fricative and the second is a stop.
Pre-velar. Common allophone of /r/ in the syllable coda, where it contrasts with . The bunching and pharyngealization may be lost in connected speech, resulting in a semivowel such as or [ə̯]. [20] See Dutch phonology: Standard Northern [19] Pre-velar. Common allophone of /r/ in the syllable coda, where it contrasts with . [19] See Dutch ...