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  • 1.
    Asker-Arnason, Lena
    et al.
    Section of Logopedics, Phoniatrics and Audiology, Department of Clinical Sciences, Lund University.
    Wengelin, Åsa
    Centre for Languages and Literature, Department of Linguistics, Lund University.
    Sahlén, Birgitta
    Section of Logopedics, Phoniatrics and Audiology, Department of Clinical Sciences, Lund University.
    Process and product in writing: A methodological contribution to the assessment of written narratives in 8-12 year old Swedish children using ScriptLog2008In: Logopedics Phoniatrics Vocology, ISSN 1401-5439, Vol. 33, no 3, p. 143-152Article in journal (Refereed)
    Abstract [en]

    Twenty-seven children, with typical language development (TLD), 8-10 years old and 10-12 years old, were assessed with keystroke-logging in order to investigate their narrative writing. Measures of the writing process and the written product were used. One purpose was to explore how children produce written narratives in on-line production, and to relate the writing process to the written product. The results showed that those children who produced the final text faster, also wrote stories that comprised of more words. In the group of older children, children with better narrative ability used less pause time than those with worse ability, and the girls were faster writers than the boys. We believe that keystroke-logging gives valuable information for the assessment of young children's writing and that it is a potentially valid assessment tool for children from about 10 years of age.

  • 2.
    Asker-Árnason, Lena
    et al.
    Lund University.
    Ibertsson, Tina
    Lund University.
    Wass, Malin
    Linköping University.
    Wengelin, Åsa
    Lund University.
    Sahlén, Birgitta
    Lund University.
    Picture-elicited written narratives, process and product, in 18 children with cochlear implants2010In: Communication Disorders Quarterly, ISSN 1525-7401, E-ISSN 1538-4837, Vol. 31, no 4, p. 195-212Article in journal (Refereed)
    Abstract [en]

    The purpose of the study was to explore the narrative writing of 18 children, ages 11 to 19, with severe and profound hearing impairment who had cochlear implants (CI), compared with the performance of hearing children. Nine of the 18 children had prelingual deafness and 9 children had postlingual deafness. The hearing impairment was progressive in 11 children. The participants thus formed a heterogeneous group, which was split in two ways: according to age at testing and age at implantation. The narratives were collected by means of keystroke logging. The difference between the children with CI and the hearing children was most prominent for two measures: the percentage of pause time (in the group of children older than 13 years) and lexical density. Furthermore, the children implanted after 5 years of age performed more like the hearing children. This group consisted of children with postlingual deafness and also of children who were deafened progressively. Our interpretation is that these children benefited from the early linguistic input. Taking the whole group of participants into consideration, the results reflect linguistic and cognitive processing limitations in complex linguistic tasks like narration for the children with CI in comparison with their hearing peers.

  • 3.
    Hallberg, Lillemor
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).
    Hakeberg, Magnus
    Univ Gothenburg, Sahlgrenska Acad, Inst Odontol, Dept Behav & Community Dent, S-40530 Gothenburg, Sweden..
    Hallberg, Ulrika
    Nordic Sch Publ Hlth, Gothenburg, Sweden..
    Facing a moral dilemma - introducing a dental care insurance within the Public Dental Service2012In: Swedish Dental Journal, ISSN 0347-9994, Vol. 36, no 3, p. 149-156Article in journal (Refereed)
    Abstract [en]

    Through the reform entitled "Dental care insurance dental care at a fixed price", patients are offered a dental insurance, a capitation plan, that ensures that they can visit the dentist regularly during a period of three years at a fixed price per month (Frisktandvard). This insurance may be offered to all patients. The aim of this study was to generate a theory explaining the main concern for the staff at the public dental service when they have to introduce and advocate dental care insurance to patients. Interview data from 17 persons, representing different professions within the public dental service, were collected and analyzed simultaneously in line with guidelines for grounded theory. The results indicated that dentists/dental hygienists experienced several difficult standpoints concerning the implementation of the dental insurance, somewhat of a moral dilemma. The staff generally had a "cautiously positive attitude" to the forthcoming dental care insurance, but had perceptions how and when the patients should be offered the insurance and what that may mean to the clinic. The respondents reflected about the economic aspects for the clinic and how the oral health may be affected over time for the patients.

  • 4.
    Hallberg, Lillemor R.-M.
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).
    Hallberg, Ulrika
    Nordic School of Public Health, Göteborg, Sweden.
    Johansson, Mattias
    Borås Hospital, Sweden.
    Jansson, Gunilla
    Borås Hospital, Sweden.
    Wiberg, Agne
    Borås Hospital, Sweden.
    Daily living with hyperacusis due to head injury 1 year after a treatment programme at the hearing clinic2005In: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 19, no 4, p. 410-418Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to gain a deeper understanding of the quality of daily living of persons with hyperacusis after a traumatic head injury 1 year after these persons had participated in a treatment programme at a Swedish hearing clinic. The study group consisted of 21 patients with a mean age of 36 years. In-depth interviews, conducted 1 year after the treatment programme, were analysed using the grounded theory method. Five emergent categories were labelled moderating vulnerability, awareness of restrictions, conditioned participation, structuring daily life and controlling mood changes. The core category, moderating vulnerability, describes the necessary balancing act between activity and recovery. The informants were aware of their new restrictions and managed daily life by structuring and planning each day in detail to minimize exposure to sensory stimuli. They had learned to prioritize their activities and, thereby, rationed their time. The evaluated programme appears to have positive effects and facilitates patients' adjustment process to hyperacusis with relatively restricted costs for the society.

  • 5.
    Hallberg, Lillemor R.-M.
    et al.
    Halmstad University, School of Social and Health Sciences (HOS), Centre of Research on Welfare, Health and Sport (CVHI).
    Ringdahl, Anders
    Hörselvårdsavdelningen, Sahlgrenska universitetssjukhuset, Göteborg.
    Vad innebär cochlea implantat (CI) som rehabilitivt hjälpmedel för vuxna med postlingual dövhet: tema: välfärd och välbefinnande2007In: Socialmedicinsk Tidskrift, ISSN 0037-833X, Vol. 84, no 3, p. 220-229Article in journal (Refereed)
    Abstract [en]

    Since about 20 years cochlear implants have been available as audiological aids for adults with postlingual deafness, i.e. profound hearing impairment or deafness acquired after development of a spoken language. The studies that will be briefly presented in the present paper aim at gaining a deeper understanding of what a cochlear implant (CI) means to adults with postlingual deafness and how quality of life is affected by the CI. We also intend to identify factors that can predict psychological well-being (quality of life). In a qualitative study it was found that the meaning attributed to having a CI referred to psychological and existential dimensions rather than to audiological factors, only. Having a CI as a rehabilitative aid means according to the informants coming back to life. In a quantitative study it was found that environmental factors, such as availability of social support, attitudes from others and chronological age explained about half of the variance in psychological well-being/quality of life. In line with Malterud (2001) we argue that medical research needs methodological multiplicity. Despite that qualitative and quantitative research differ concerning ontological and epistemological starting-points, methodologically the approaches should be seen as complementary rather than as incompatible.

  • 6.
    Hallberg, Lillemor R.-M.
    et al.
    Halmstad University, School of Social and Health Sciences (HOS), Centre of Research on Welfare, Health and Sport (CVHI).
    Ringdahl, Anders
    Sahlgrenska University Hospital, Göteborg University, Sweden.
    Holmes, A.
    Department of Communicative Disorders, University of Florida.
    Carver, C.
    Department of Communicative Disorders, University of Florida.
    Psychological general well-being (quality of life) in patients with cochlear implants: Importance of social environment and age2005In: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 44, no 12, p. 706-711Article in journal (Refereed)
    Abstract [en]

    The purpose of this study was to investigate the variables that affect psychological general well-being (quality of life) in patients with cochlear implants (CIs). The study sample consists of 96 adult patients with a CI, aged 24–86 years (Mean = 61.8 yrs; SD = 15.3 yrs). 48 were patients from the Sahlgrenska University Hospital in Sweden and 48 were patients from the University of Florida, USA. The Psychological General Well-being Index and the International Outcome Inventory-Cochlear implants were used in collecting data. Possible independent variables were socioeconomic factors such as age, gender, nationality, living arrangement, education, and social support; as well as length of time since implantation, age when hearing loss became a problem, and subjective benefit of the CI. A stepwise multiple regression analysis showed that 49% of the variance was explained by attitudes from others, restricted social participation, perceived social support and age.

  • 7.
    Helvik, Anne-Sofie
    et al.
    Ear, Nose and Throat Department (ENT), St Olavs University Hospital, Trondheim, Norway.
    Thürmer, Hanne
    Blefjell Hospital, Notodden, Norway.
    Jacobsen, Geir W.
    Department of Public Health and General Practice, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
    Bratt, Mette
    Ear, Nose and Throat Department (ENT), St Olavs University Hospital, Trondheim, Norway.
    Hallberg, Lillemor R.-M.
    Halmstad University, School of Social and Health Sciences (HOS), Centre of Research on Welfare, Health and Sport (CVHI).
    Psychometric evaluation of a Norwegian version of the Hearing Disability and Handicap Scale2007In: Scandinavian Journal of Disability Research, ISSN 1501-7419, E-ISSN 1745-3011, Vol. 9, no 2, p. 112-124Article in journal (Refereed)
    Abstract [en]

    Aim:

    To evaluate the Hearing Disability and Handicap Scale (HDHS) in an unselected population of adults with hearing impairment.

    Subjects and methods:

    A total of 342 consecutive adults who consulted the outpatient unit of audiology in the ENT department of a Norwegian university hospital answered HDHS, which intends to assess the negative consequences of hearing loss. The psychometric evaluation included internal structure analyses and made use of principal factors followed by varimax rotation, construct validity by corrected item-total correlation, and internal consistency reliability by Cronbach's alpha coefficient.

    Results:

    HDHS showed good psychometric properties with three factors, i.e. speech perception (five items), non-speech sound (five items) and participation restriction (10 items). All had good internal consistency reliability. The inventory distinguished between activity limitations and other problems related to social life participation.

    Conclusion:

    HDHS was found to be adequate for research and clinical purposes in an unselected adult population with a quite different cultural background and language than the original one.

  • 8.
    Stasiunas, Antanas
    et al.
    Department of Electrical and Control Equipment, Kaunas University of Technology, Kaunas, Lithuania.
    Verikas, Antanas
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
    Bacauskiene, Marija
    Department of Electrical and Control Equipment, Kaunas University of Technology, Kaunas, Lithuania.
    Miliauskas, Rimvydas
    Department of Physiology, Lithuanian University of Health Sciences, Kaunas, Lithuania.
    An adaptive panoramic filter bank as a qualitative model of the filtering system of the cochlea: The peculiarities in linear and nonlinear mode2012In: Medical Engineering and Physics, ISSN 1350-4533, E-ISSN 1873-4030, Vol. 34, no 2, p. 187-194Article in journal (Refereed)
    Abstract [en]

    Outer hair cells in the cochlea of the ear, together with the local structures of the basilar membrane, reticular lamina and tectorial membrane constitute the adaptive primary filters (PF) of the second order. We used them for designing a serial-parallel signal filtering system. We determined a rational number of the PF included in Gaussian channels of the system, summation weights of the output signals, and distribution of the PF along the basilar membrane. A Gaussian panoramic filter bank each channel of which consists of five PF is presented as an example. The properties of the PF, the channel and the filter bank operating in the linear and nonlinear modes are determined during adaptation and under efferent control. The results suggest that application of biological filtering principles can be useful for designing cochlear implants with new speech encoding strategies. © 2011 IPEM.

  • 9.
    Uloza, Virgilijus
    et al.
    Department of Otolaryngology, Kaunas University of Medicine, Eiveniu 2, LT-50009 Kaunas, Lithuania.
    Verikas, Antanas
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
    Bacauskiene, Marija
    Department of Electrical and Control Instrumentation, Kaunas University of Technology, Kaunas, Lithuania.
    Gelzinis, Adas
    Department of Electrical and Control Instrumentation, Kaunas University of Technology, Kaunas, Lithuania.
    Pribuisiene, Ruta
    Department of Otolaryngology, Kaunas University of Medicine, Eiveniu 2, LT-50009 Kaunas, Lithuania.
    Kaseta, Marius
    Department of Otolaryngology, Kaunas University of Medicine, Eiveniu 2, LT-50009 Kaunas, Lithuania.
    Saferis, Viktoras
    Department of Physics, Mathematics and Biophysics, Kaunas University of Medicine, Kaunas, Lithuania.
    Categorizing Normal and Pathological Voices: Automated and Perceptual Categorization2011In: Journal of Voice, ISSN 0892-1997, E-ISSN 1873-4588, Vol. 25, no 6, p. 700-708Article in journal (Refereed)
    Abstract [en]

    Objectives: The aims of the present study were to evaluate the accuracy of an elaborated automated voice categorization system that classified voice signal samples into healthy and pathological classes and to compare it with classification accuracy that was attained by human experts. Material and Methods: We investigated the effectiveness of 10 different feature sets in the classification of voice recordings of the sustained phonation of the vowel sound /a/ into the healthy and two pathological voice classes, and proposed a new approach to building a sequential committee of support vector machines (SVMs) for the classification. By applying “genetic search” (a search technique used to find solutions to optimization problems), we determined the optimal values of hyper-parameters of the committee and the feature sets that provided the best performance. Four experienced clinical voice specialists who evaluated the same voice recordings served as experts. The “gold standard” for classification was clinically and histologically proven diagnosis. Results: A considerable improvement in the classification accuracy was obtained from the committee when compared with the single feature type-based classifiers. In the experimental investigations that were performed using 444 voice recordings coming from 148 subjects, three recordings from each subject, we obtained the correct classification rate (CCR) of over 92% when classifying into the healthy-pathological voice classes, and over 90% when classifying into three classes (healthy voice and two nodular or diffuse lesion voice classes). The CCR obtained from human experts was about 74% and 60%, respectively. Conclusion: When operating under the same experimental conditions, the automated voice discrimination technique based on sequential committee of SVM was considerably more effective than the human experts.

  • 10.
    Verikas, Antanas
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Gelzinis, Adas
    Department of Applied Electronics, Kaunas University of Technology, Studentu 50, LT-51368 Kaunas, Lithuania.
    Bacauskiene, Marija
    Department of Applied Electronics, Kaunas University of Technology, Studentu 50, LT-51368 Kaunas, Lithuania.
    Uloza, Virgilijus
    Department of Otolaryngology, Kaunas University of Medicine, LT-50009 Kaunas, Lithuania.
    Kaseta, Marius
    Department of Otolaryngology, Kaunas University of Medicine, LT-50009 Kaunas, Lithuania.
    Using the patient's questionnaire data to screen laryngeal disorders2009In: Computers in Biology and Medicine, ISSN 0010-4825, E-ISSN 1879-0534, Vol. 39, no 2, p. 148-155Article in journal (Refereed)
    Abstract [en]

    This paper is concerned with soft computing techniques for screening laryngeal disorders based on patient's questionnaire data. By applying the genetic search, the most important questionnaire statements are determined and a support vector machine (SVM) classifier is designed for categorizing the questionnaire data into the healthy, nodular and diffuse classes. To explore the obtained automated decisions, the curvilinear component analysis (CCA) in the space of decisions as well as questionnaire statements is applied. When testing the developed tools on the set of data collected from 180 patients, the classification accuracy of 85.0% was obtained. Bearing in mind the subjective nature of the data, the obtained classification accuracy is rather encouraging. The CCA allows obtaining ordered two-dimensional maps of the data in various spaces and facilitates the exploration of automated decisions provided by the system and determination of relevant groups of patients for various comparisons.

  • 11.
    Verikas, Antanas
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Intelligent systems (IS-lab).
    Uloza, Virgilijus
    Department of Otolaryngology, Kaunas University of Medicine, Kaunas 50009, Lithuania.
    Bacauskiene, Marija
    Department of Applied Electronics, Kaunas University of Technology, Studentu 50, Kaunas 51368, Lithuania.
    Gelzinis, Adas
    Department of Applied Electronics, Kaunas University of Technology, Studentu 50, Kaunas 51368, Lithuania.
    Kelertas, Edgaras
    Department of Applied Electronics, Kaunas University of Technology, Studentu 50, Kaunas 51368, Lithuania.
    Advances in laryngeal imaging2009In: European Archives of Oto-Rhino-Laryngology, ISSN 0937-4477, E-ISSN 1434-4726, Vol. 266, no 10, p. 1509-1520Article in journal (Refereed)
    Abstract [en]

    Imaging and image analysis became an important issue in laryngeal diagnostics. Various techniques, such as videostroboscopy, videokymography, digital kymograpgy, or ultrasonography are available and are used in research and clinical practice. This paper reviews recent advances in imaging for laryngeal diagnostics.

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