Diadochokinesia: Diadochokinesia or diadochokinesis is the ability to make antagonistic movements in quick succession, alternately bringing a limb into opposite positions, as of flexion and extension or of pronation and supination. Speech-language pathology defines it as the speed necessary to stop a determined motor impulse and substitute it with its opposite.Silent speech interface: Silent speech interface is a device that allows speech communication without using the sound made when people vocalize their speech sounds. As such it is a type of electronic lip reading.Non-native pronunciations of English: Non-native pronunciations of English result from the common linguistic phenomenon in which non-native users of any language tend to carry the intonation, phonological processes and pronunciation rules from their mother tongue into their English speech. They may also create innovative pronunciations for English sounds not found in the speaker's first language.Nasal voice: A nasal voice is a type of speaking voice characterized by speech with a "nasal" quality to it. It can also occur naturally because of genetic variation.DysarthriaMotor speech disorders: Motor speech disorders are a class of speech disorder that disturb the body's natural ability to speak. These disturbances vary in their etiology based on the integrity and integration of cognitive, neuromuscular, and musculoskeletal activities.Kingston parakeets: The Kingston parakeets, also known as the Twickenham parakeets, are feral rose-ringed parakeets (Psittacula krameri) that live in the suburbs around Kingston and Twickenham, South West London, England, numbering at least 6,000, with some estimates as high as 50,000 individuals. The origins of the flocks are subject to speculation.Bipolar disorderInternational Stuttering Awareness Day: October 22 was designated International Stuttering Awareness Day (ISAD) in 1998. The day is intended to raise public awareness of the millions of people – one percent of the world's population – who have the speech disorder of stuttering, also known as stammering.Mental disorderSocial anxiety disorderLinear low-density polyethylene: Linear low-density polyethylene (LLDPE) is a substantially linear polymer (polyethylene), with significant numbers of short branches, commonly made by copolymerization of ethylene with longer-chain olefins. Linear low-density polyethylene differs structurally from conventional low-density polyethylene (LDPE) because of the absence of long chain branching.Dysprosody: Dysprosody, which may manifest as pseudo-foreign accent syndrome, refers to a disorder in which one or more of the prosodic functions are either compromised or eliminated completely.Janwillem van den Berg: Janwillem van den Berg (20 November 1920 in Akkrum – 18 October 1985 in Akkrum) was a Dutch speech scientist and medical physicist who played a major role in establishing the myoelastic-aerodynamic theoryTitze, I. R.Lip readingMetallosis: Metallosis is the putative medical condition involving deposition and build-up of metal debris in the soft tissues of the body.Anterior atlantooccipital membrane: The anterior atlantooccipital membrane (anterior atlantooccipital ligament) is broad and composed of densely woven fibers, which pass between the anterior margin of the foramen magnum above, and the upper border of the anterior arch of the atlas below.Voice changer: The term voice changer (also known as voice enhancer) refers to a system of altering a person's voice to either make them sound like someone else or to disguise their voice.Key word signing: Key word signing is a technique of Simultaneous Communication whereby the communication partner of the user will use both natural speech and also produce signs for the words that carry the most important information.Windsor, J.Steel tongue drum: A steel tongue drum, tank drum or hank drum is a round steel slit/tongue drum originally fashioned from a propane tank.Lubrication: Lubrication is the process or technique employed to reduce friction between, and wear of one or both, surfaces in proximity and moving relative to each other, by interposing a substance called a lubricant between them. The lubricant can be a solid, (e.SchizophreniaThruster: A thruster is a propulsive device used by spacecraft and watercraft for station keeping, attitude control, in the reaction control system, or long-duration, low-thrust acceleration.Herbert M. SheltonLunate sulcus: In brain anatomy, the lunate sulcus or simian sulcus also known as the sulcus lunatus is a fissure in the occipital lobe found in humans and more often larger when present in apes and monkeys.