| 1. |
- Eriksson, André, et al.
(author)
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A formal approach to anomaly detection
- 2016
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In: ICPRAM 2016 - Proceedings of the 5th International Conference on Pattern Recognition Applications and Methods. - : SciTePress. - 9789897581731 ; , s. 317-326
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Conference paper (peer-reviewed)abstract
- While many advances towards effective anomaly detection techniques targeting specific applications have been made in recent years, little work has been done to develop application-agnostic approaches to the subject. In this article, we present such an approach, in which anomaly detection methods are treated as formal, structured objects. We consider a general class of methods, with an emphasis on methods that utilize structural properties of the data they operate on. For this class of methods, we develop a decomposition into sub-methods-simple, restricted objects, which may be reasoned about independently and combined to form methods. As we show, this formalism enables the construction of software that facilitates formulating, implementing, evaluating, as well as algorithmically finding and calibrating anomaly detection methods.
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| 2. |
- Eriksson, Elina, et al.
(author)
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Design Recommendations for a Computer-Based Speech Training System Based on End User Interviews
- 2005
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In: Proceedings of the Tenth International Conference on Speech and Computers. ; , s. 483-486
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Conference paper (peer-reviewed)abstract
- This study has been performed in order to improve theusability of computer-based speech training (CBST) aids.The aim was to engage the users of speech training systemsin the first step of creating a new CBST aid. Speechtherapists and children with hearing- or speech impairmentwere interviewed and the result of the interviews ispresented in the form of design recommendations.
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| 3. |
- Eriksson, Hedvig, et al.
(author)
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Voice Outcomes Following Head-Lift Exercises in Head and Neck Cancer: A Randomized Controlled Study.
- 2023
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In: Journal of voice : official journal of the Voice Foundation. - : Elsevier BV. - 1873-4588. ; 37:2, s. 226-233
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Journal article (peer-reviewed)abstract
- This prospective randomized study aimed to investigate whether patients with dysphagia after treatment for head and neck cancer improve their vocal function from doing head lift exercises (Shaker's exercise).Patients were randomized into an intervention group (n=24) or a control group (n=26). Patients in the intervention group performed the head lift exercise three times a day for 8 weeks. At baseline and at follow-up after 8 weeks, participants' voices were evaluated perceptually with the Grade-Roughness-Breathiness-Asthenia-Strain (GRBAS) scale. Vocal fry (VF) was also perceptually evaluated and patients filled in the Voice Handicap Index (VHI).Patients in the intervention group were perceptually evaluated as having less roughness and vocal fry in their voices at follow-up compared to the control group. There were no statistically significant changes between baseline and follow-up neither in the intervention nor the control group regarding GRBAS, VF, or VHI. Neither were there any statistically significant differences within the groups when results on the perceptual evaluations at baseline and follow-up were compared.The voices of the participants in the intervention group were slightly better than the voices of the participants in the control group with less roughness and VF at follow-up. However, no improvement in the VHI or the remaining GRBAS variables was found. Therefore, this study can only give cautious support to the head lift exercise as a method for improving the voice of patients with dysphagia after treatment for head and neck cancer.
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| 4. |
- Eriksson, Sara, et al.
(author)
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Dancing With Drones : Crafting Novel Artistic Expressions Through Intercorporeality
- 2019
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In: Proceedings of the 2019 CHI Conference on Human Factors in Computing Systems. - New York, NY, USA : ACM. - 9781450359702 ; , s. 617:1-617:12
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Conference paper (peer-reviewed)abstract
- Movement-based interactions are gaining traction, requiring a better understanding of how such expressions are shaped by designers. Through an analysis of an artistic process aimed to deliver a commissioned opera where custom-built drones are performing on stage alongside human performers, we observed the importance of achieving an intercorporeal understanding to shape body-based emotional expressivity. Our analysis reveals how the choreographer moves herself to: (1) imitate and feel the affordances and expressivity of the drones' 'otherness' through her own bodily experience; (2) communicate to the engineer of the team how she wants to alter the drones' behaviors to be more expressive; (3) enact and interactively alter her choreography. Through months of intense development and creative work, such an intercorporeal understanding was achieved by carefully crafting the drones' behaviors, but also by the choreographer adjusting her own somatics and expressions. The choreography arose as a result of the expressivity they enabled together.
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| 5. |
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| 6. |
- Stening, Eva, et al.
(author)
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Apolipoprotein E ϵ4 is positively related to spatial performance but unrelated to hippocampal volume in healthy young adults
- 2016
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In: Behavioural Brain Research. - : Elsevier BV. - 0166-4328 .- 1872-7549. ; 299, s. 11-18
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Journal article (peer-reviewed)abstract
- The apolipoprotein E (APOE) ϵ4 allele is known to be a major genetic risk factor for Alzheimer's disease (AD). It has been linked to especially episodic memory decline and hippocampal atrophy in both healthy and demented elderly populations. In young adults, ϵ4 carriers have shown better performance in episodic memory compared to non-carriers. Spatial memory, however, has not been thoroughly assessed in relation to APOE in spite of its dependence on the hippocampus. In this study, we assessed the effect of APOE genotype on a variety of spatial and episodic memory tasks as well as hippocampal volume assessed through manual tracing in a sample of young adults (N=123). We also assessed whether potential effects were modulated by sex. The presence of one or more ϵ4 alleles had positive effects on spatial function and memory and object location memory, but no effect on word recognition. Men were superior to women in spatial function and memory but there were no sex differences in the other tasks. In spite of APOE ϵ4 carriers having superior performance in several memory tasks, no difference was found as a function of APOE genotype in hippocampal volume. To our knowledge, this study is the first to show that APOE ϵ4 has a positive effect on spatial ability in young adults.
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| 7. |
- Stening, Eva, et al.
(author)
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Specific patterns of whole-brain structural covariance of the anterior and posterior hippocampus in young APOE ε4 carriers.
- 2017
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In: Behavioural brain research. - : Elsevier BV. - 1872-7549 .- 0166-4328. ; 326, s. 256-264
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Journal article (peer-reviewed)abstract
- Apolipoprotein E (APOE) ε4 has been associated with smaller hippocampal volumes in healthy aging, while findings in young adults are inconclusive. Previous studies have mostly used univariate methods, and without considering potential anterior/posterior differences. Here, we used a multivariate method, partial least squares, and assessed whole-brain structural covariance of the anterior (aHC) and posterior (pHC) hippocampus in young adults (n=97) as a function of APOE ε4 status and sex. Two significant patterns emerged: (1) specific structural covariance of the aHC with frontal regions, temporal and occipital areas in APOE ε4 women, whereas the volume of both the aHC and pHC in all other groups co-varied with frontal, parietal and cerebellar areas; and (2) opposite structural covariance of the pHC in ε4 carriers compared to the aHC in non-carriers, with the pHC of ε4 carriers covarying with parietal and frontal areas, and the aHC of ε4 non-carriers covarying with motor areas and the middle frontal gyrus. APOE ε4 has in young adults been associated with better episodic and spatial memory, functions involving the aHC and pHC, respectively. We found no associations between structural covariance and performance, suggesting that other factors underlie the performance differences seen between carriers and non-carriers. Our findings indicate that APOE ε4 carriers and non-carriers differ in hippocampal organization and that there are differences as a function of sex and hippocampal segment. They stress the need to consider the hippocampus as a heterogeneous structure, and highlight the benefits of multivariate methods in assessing group differences in the brain.
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