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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Using matrix training procedures to develop spontaneous and functional symbol communication

Hewitt, James January 1995 (has links)
No description available.
2

A Concept-based P300 Communication System

Smith, Colleen Denyse Desaulniers 27 November 2012 (has links)
Severe motor impairments can severely restrict interaction with one's surroundings. Brain computer interfaces combined with text-based communication systems, such as the P300 Speller, have allowed individuals with motor disabilities to spell messages with their EEG signals. Although providing full composition flexibility, they enable communication rates of only a few characters per minute. Utterance-based communication systems have been developed for individuals with disability and have greatly increased communication speeds, but have yet to be applied to BCIs. This paper proposes an utterance-based communication system using the P300-BCI in which words are organized in a network structure that facilitates rapid retrieval. In trials with able-bodied participants, the proposed system achieved greater message speeds, but rated lower in effectiveness than the P300 Speller. Nonetheless, subject preferences and reports of self-perceived effectiveness suggested an inclination towards the proposed word system and thus further investigation of word-based networks is warranted in brain-controlled AAC systems.
3

A Concept-based P300 Communication System

Smith, Colleen Denyse Desaulniers 27 November 2012 (has links)
Severe motor impairments can severely restrict interaction with one's surroundings. Brain computer interfaces combined with text-based communication systems, such as the P300 Speller, have allowed individuals with motor disabilities to spell messages with their EEG signals. Although providing full composition flexibility, they enable communication rates of only a few characters per minute. Utterance-based communication systems have been developed for individuals with disability and have greatly increased communication speeds, but have yet to be applied to BCIs. This paper proposes an utterance-based communication system using the P300-BCI in which words are organized in a network structure that facilitates rapid retrieval. In trials with able-bodied participants, the proposed system achieved greater message speeds, but rated lower in effectiveness than the P300 Speller. Nonetheless, subject preferences and reports of self-perceived effectiveness suggested an inclination towards the proposed word system and thus further investigation of word-based networks is warranted in brain-controlled AAC systems.
4

Core Vocabulary in Augmentative Communication

Marks, Lori J., McMurray, M. L. 09 November 2007 (has links)
No description available.
5

Augmentative Communication

Marks, Lori J. 08 February 2002 (has links)
No description available.
6

Teaching Mands to Individuals with Autism Spectrum Disorder: An Evaluation of the Essential for Living Communication Modality Assessment

Orozco, Daniella 26 July 2018 (has links)
McGreevy, Fry, and Cornwall (2014) developed an assessment within the Essential for Living (EFL) manual for clinicians to identify which communication modality should be used for each individual. This assessment identifies an AAC based on the learner’s skills, level of problem behavior, similarities between AAC and vocal community, and size of the verbal community. However, to date, no research has evaluated if this assessment identifies the communication modality that will result in faster acquisition of mands in individuals with ASD. Thus, the purpose of this study was to compare acquisition of mands across a modality identified by the EFL communication modality assessment and two other commonly used modalities. A secondary purpose was to determine if participants acquire mands using the mode of AAC identified by EFL. Finally, a third purpose was to determine if the communication modality identified by EFL communication modality assessment matches the modality currently used by the individual. Findings showed that although all three participants acquired mands across the three communication modalities, mands in the modality of communication recommended by the EFL assessment were acquired faster only by 1 out of the 3 participants.
7

Alternativ kommunikation - för alla barn : <em>en studie om uppfattningar av alternativ kommunikation bland verksamma pedagoger inom tre förskoleverksamheter</em>

Mattsson, Elenor, Dahlqvist, Mia January 2009 (has links)
<p>Då vi i vår omgivning uppmärksammat en viss okunskap angående alternativ kommunikation ökade intresset att göra en studie om förskollärares uppfattning om ämnet. Avsikten var även att studien skulle ha en informativ substans och därav bidra med mer kunskap inom detta område. Syftet med studien blev därmed att undersöka hur förskollärare definierar alternativ kommunikation. Ett vidare syfte var även att belysa förskollärarnas relation till ämnet, tillika utröna deras framtidstro. För att kunna synliggöra detta har vi inspirerats av fenomenologin som fokuserar på en persons beskrivning av ett fenomen, vilket i detta fall är alternativ kommunikation. Studien är av kvalitativ karaktär och vi intervjuade sex informanter på tre skilda förskolor vars arbetsätt gällande alternativ kommunikation skiljde sig åt. Resultatet visade att förskollärarna hade en relativt klar bild gällande vad alternativ kommunikation innebär för dem. Deras syften skiljde sig dock åt då barnen hade skilda behov och därav även verksamheternas olika pedagogiska inriktningar. Informanterna uppfattade alternativ kommunikation som en viktig del i framtiden vilket kommer att utvecklas då de menar att det är något som gynnar alla barn.</p>
8

Alternativ kommunikation - för alla barn : en studie om uppfattningar av alternativ kommunikation bland verksamma pedagoger inom tre förskoleverksamheter

Mattsson, Elenor, Dahlqvist, Mia January 2009 (has links)
Då vi i vår omgivning uppmärksammat en viss okunskap angående alternativ kommunikation ökade intresset att göra en studie om förskollärares uppfattning om ämnet. Avsikten var även att studien skulle ha en informativ substans och därav bidra med mer kunskap inom detta område. Syftet med studien blev därmed att undersöka hur förskollärare definierar alternativ kommunikation. Ett vidare syfte var även att belysa förskollärarnas relation till ämnet, tillika utröna deras framtidstro. För att kunna synliggöra detta har vi inspirerats av fenomenologin som fokuserar på en persons beskrivning av ett fenomen, vilket i detta fall är alternativ kommunikation. Studien är av kvalitativ karaktär och vi intervjuade sex informanter på tre skilda förskolor vars arbetsätt gällande alternativ kommunikation skiljde sig åt. Resultatet visade att förskollärarna hade en relativt klar bild gällande vad alternativ kommunikation innebär för dem. Deras syften skiljde sig dock åt då barnen hade skilda behov och därav även verksamheternas olika pedagogiska inriktningar. Informanterna uppfattade alternativ kommunikation som en viktig del i framtiden vilket kommer att utvecklas då de menar att det är något som gynnar alla barn.
9

Advanced Augmentative and Alternative Communication System Based in Physiological Control

Díaz Pineda, Jaime Alberto 03 November 2017 (has links)
Dyskinetic Cerebral Palsy (DCP) is mainly characterized by alterations in muscle tone and involuntary movements. Therefore, these people present with difficulties in coordination and movement control, which makes walking difficult and affects their posture when seated. Additionally, their cognitive performance varies between being completely normal and severe mental retardation. People with DCP were selected as the objective of this thesis due to their multiple and complex limitations (speech problems and motor control) and because their capabilities have a great margin for improvement thanks to physiological control systems. Given their communication difficulties, some people with DCP have good motor con-trol and can communicate with written language. However, most have difficulty using Augmentative and Alternative Communication (AAC) systems. People with DCP gen-erally use concept boards to indicate the idea they want to communicate. However, most communication solutions available today are based on proprietary software that makes it difficult to customize the concept board and this type of control system. This is the motivation behind this thesis, with the aim of creating an interface with characteristics, able to be adapted to the user needs and limitations. Thus, this thesis proposes an Augmentative and Alternative Communication System for people with DCP based on physiological control. In addition, an innovative system for direct con-trol of concept boards with EMG is proposed. This control system is based on a physi-cal model that reproduces the muscular mechanical response (stiffness, inertia and viscosity). It allows for a selection of elements thanks to small pulses of EMG signal with sensors on a muscle with motor control. Its main advantage is the possibility of correcting errors during selection associated with uncontrolled muscle impulses, avoid-ing sustained muscle effort and thus reduced fatigue. / La Parálisis Cerebral de tipo Discinésica (DCP) se caracteriza principalmente por las alteraciones del tono muscular y los movimientos involuntarios. Por ello, estos pacientes presentan dificultades en la coordinación y en el control de movimientos, lo cual les dificulta el caminar y afecta su postura cuando están sentados. Cabe resaltar que la capacidad cognitiva de las personas con DCP puede variar desde completamente normal, hasta un retraso mental severo. Las personas con DCP han sido seleccionadas como objetivo de esta tesis ya el margen de mejora de sus capacidades es amplio gracias a sistemas de control fisiológico, debido a sus múltiples y complejas limitaciones (problemas de habla y control motor). Debido a sus dificultades de comunicación, algunas personas con DCP se pueden comunicar con lenguaje escrito, siempre y cuando tenga un buen control motor. Sin embargo, la mayoría tienen dificultades para usar sistemas de Comunicación Aumentativos y Alternativos (AAC). De hecho, las personas con DCP utilizan generalmente tableros de conceptos para indicar la idea que quieren transmitir. Sin embargo, la mayoría las soluciones de comunicación disponibles en la actualidad están basadas en software propietario que hacen difícil la personalización del tablero de conceptos y el tipo de sistema de control. Es aquí donde surge esta tesis, con el objetivo de crear una interfaz con esas características, capaz de adaptarse a las necesidades y limitaciones del usuario. De esta forma, esta tesis propone un sistema de comunicación aumentativo y alternativo para personas con DCP basado en control fisiológico. Además, se propone un Sistema innovador de control directo sobre tableros de conceptos basado en EMG. Este Sistema de control se basa en un modelo físico que reproduce la respuesta mecánica muscular (basado en parámetros como Rigidez, Inercia y Viscosidad), permitiendo la selección de elementos gracias a pequeños pulsos de señal EMG con sensores sobre un músculo con control motor. Sus principales ventajas son la posibilidad de corregir errores durante la selección asociado a los impulsos musculares no controlados, evitar el esfuerzo muscular mantenido para alcanzar un nivel y reducir la fatiga. / La Paràlisi Cerebral de tipus Discinèsica (DCP) es caracteritza principalment per les alteracions del to muscular i els moviments involuntaris. Per açò, aquests pacients presenten dificultats en la coordinació i en el control de moviments, la qual cosa els dificulta el caminar i afecta la seua postura quan estan asseguts. Cal ressaltar que la capacitat cognitiva de les persones amb DCP pot variar des de completament normal, fins a un retard mental sever. Les persones amb DCP han sigut seleccionades com a objectiu d'aquesta tesi ja el marge de millora de les seues capacitats és ampli gràcies a sistemes de control fisiològic, a causa dels seus múltiples i complexes limitacions (problemes de parla i control motor). A causa de les seues dificultats de comunicació, algunes persones amb DCP es poden comunicar amb llenguatge escrit, sempre que tinga un bon control motor. No obstant açò, la majoria tenen dificultats per a usar sistemes de Comunicació Augmentatius i Alternatius (AAC). De fet, les persones amb DCP utilitzen generalment taulers de conceptes per a indicar la idea que volen transmetre. No obstant açò, la majoria les solucions de comunicació disponibles en l'actualitat estan basades en programari propietari que fan difícil la personalització del tauler de conceptes i el tipus de sistema de control. És ací on sorgeix aquesta tesi, amb l'objectiu de crear una interfície amb aqueixes característiques, capaç d'adaptar-se a les necessitats i limitacions de l'usuari. D'aquesta forma, aquesta tesi proposa un sistema de comunicació augmentatiu i alternatiu per a persones amb DCP basat en control fisiològic. A més, es proposa un sistema innovador de control directe sobre taulers de conceptes basat en EMG. Aquest sistema de control es basa en un model físic que reprodueix la resposta mecànica muscular (basat en paràmetres com a Rigidesa, Inèrcia i Viscositat), permetent la selecció d'elements gràcies a xicotets polsos de senyal EMG amb sensors sobre un múscul amb control motor. Els seus principals avantatges són la possibilitat de corregir errors durant la selecció associat als impulsos musculars no controlats, evitar l'esforç muscular mantingut per a aconseguir un nivell i reduir la fatiga. / Díaz Pineda, JA. (2017). Advanced Augmentative and Alternative Communication System Based in Physiological Control [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/90418 / TESIS
10

The effect of frequency of augmented input on the auditory comprehension of narratives for persons with Wernicke’s aphasia

Leuvennink, Jacqueline Lisinda January 2019 (has links)
Augmented input refers to the support of any form of linguistic or visual strategies to enhance understanding during intervention. Previous research predominantly focused on the various types of augmented input that can be used, especially to support reading comprehension. The purpose of this study was to determine and compare the effect of varying amounts of augmented input using partner-pointing on the accuracy of auditory comprehension for persons with Wernicke’s aphasia specifically. The research was conducted with seven participants with Wernicke’s aphasia. The participants listened to three narratives in three conditions, namely 0%, 50% and 100% augmented input with partner-pointing, and then responded to comprehension items based on the narratives. Most participants had more accurate scores during the 50% augmented input condition. In addition, participants did significantly better in the 50% condition than in the 100% augmented input condition. The main clinical implication is that supporting narrative auditory comprehension with augmented input, used as pre-task and during-task stimulation, seems to facilitate the improved auditory comprehension of narratives for some persons with Wernicke’s aphasia. However, providing augmented input for all the content units of a narrative seems to have a negative effect on the auditory comprehension of some persons with Wernicke’s aphasia. Continued research is necessary to determine what types and frequency of augmented input will lead to improved auditory comprehension for persons with aphasia, specifically Wernicke’s aphasia. / Dissertation (MA)--University of Pretoria, 2019. / Centre for Augmentative and Alternative Communication (CAAC) / MA / Unrestricted

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