Hearing Dogs Research Articles

CVS staff support Hearing Dogs for Deaf People

CVS staff support Hearing Dogs for Deaf People

Exploring the Relationship between Persons with Hearing Loss/Deafness and Their Hearing Dogs.

The reported positive outcomes of animal-assisted services have led to an emerging interest in many different aspects of human-animal interactions. The influence of an assistance animal is thought to encompass several psychosocial domains in the life of a person with a significant health impairment. However, little is known about the mechanisms underlying the relationship between Hearing Dogs and their owners. A prospective study design using a written questionnaire method was utilized to survey 58 current and 23 prospective Australian Lions Hearing Dogs owners. The Pet Expectations Inventory (PEI) was used to investigate the anticipated role of Hearing Dogs in waitlisted persons with hearing loss/Deafness, whereas the Lexington Attachment to Pets Scale (LAPS) was completed by current owners to assess emotional attachment. The results revealed a high mean PEI score (M = 73.1, SD = 10.9, Mdn = 73.0, range: 55-91), with prospective owners strongly expecting the role of Hearing Dogs to include companionship/love and security. Furthermore, strong attachment features were evident in the owners' relationships with Hearing Dogs, as demonstrated by a high total LAPS score (M = 81.2, SD = 7.5, range: 63-91). Mean scores for statements within the "people substitution" category were highest (range = 3.6/4.00-3.9/4.00). In this demographically homogenous study cohort, it appeared that the high expectations of potential Hearing Dog owners for their animals to serve supportive roles beyond hearing assistance should be achievable, as evidenced by the strong attachment relationships displayed between Hearing Dogs and their owners.

Hearing Dogs and Seeing Barks: Multimodal Sensory Perception of Dogs

The field of multisensory integration in human speech perception has been well explored throughout a multitude of studies. Perceptual phenomena and models have been reported, including most notably, the McGurk effect and the Morton-Massaro law of information integration. Existing research of multimodal integration in human perception, include studies that involve perception of drinks and food. Beyond this, scientists have also studied how non-human species, such as dolphins and bats, integrate different sources of information. The purpose of the current study was to test whether multimodal sensory integration is used by humans when perceiving the size of dogs. Three separate audio-visual sources of barking dogs – sized small, medium, and large – were used. A 3x3 expanded factorial design was applied to test all possible pairings of auditory and visual combinations from the three sources. The stimuli were included on a questionnaire and then digitally distributed to participants, the majority of whom were high-school students aged 13-17. After viewing each stimulus, participants were prompted to answer what sized dog barked. The results of the current study were consistent with the McGurk effect. When the auditory-visual stimuli were consistent, participants were able to accurately identify what kind of dog barked. However, when the auditory-visual stimuli were inconsistent, the intermediate responses were most frequent. Thus, the results of this study are not consistent with the motor theory of perception. This study yields practical applications in the field of interspecies perception and human-canine communication.

The Role and Relevance of Hearing Dogs from the Owner’s Perspective: An Explorative Study among Adults with Hearing Loss

This study aimed to explore perceptions and experiences about how owning a hearing dog can influence the functioning and the autonomy of people with hearing loss. Three adults participated in a semi-structured interview. The interviews were video recorded, transcribed, and coded. A procedure combining qualitative content analysis and interpretative phenomenological analysis was used. The study shows how specific aspects of hearing dogs are associated with increased autonomy and sense of security among owners. The attentive dog-owner pairing, the outstanding training and the companion role of the hearing dog are the main elements supporting the high satisfaction related by all the participants. In regard of the location context (Quebec, Canada), ongoing challenges for owners are reflected in the lack of visibility of this rehabilitation means and its poor recognition from the society, resulting in the constant burden to explain the dog's work to others. For adults with hearing loss, the hearing dog is a relevant way of offering both the benefits of functional assistance and the psychosocial support of a pet. The association between owning a hearing dog and improved overall well-being suggests that this form of rehabilitation should be considered as a pertinent option by hearing health professionals.

De-novo and genome-wide meta-analyses identify a risk haplotype for congenital sensorineural deafness in Dalmatian dogs

Congenital sensorineural deafness (CSD) has been reported to affect up to 30% of Dalmatian dogs world-wide and while unilaterally deaf dogs can live a close to normal life, dogs suffering bilateral deafness are frequently euthanized. Extreme-white coat patterning as encoded by the gene Melanocyte Inducing Transcription Factor (MITF) has long been postulated as the major risk factor for CSD in the Dalmatian breed. While attempts to identify causative risk variants associated with CSD have been numerous, no genome-wide association study has positively identified MITF as a risk locus for either bilateral or unilateral deafness in the Dalmatian breed to date. In this study, we identified an association with CSD on CFA20 in the vicinity of MITF within Australian Dalmatian dogs. Although not genome-wide significant, the association signal was validated by reanalysing publicly available data and merging the wider data resource with the local data to improve statistical power. The merged data, representing three major global populations of Dalmatian dogs, enabled us to identify a single, well-defined genome-wide significant risk haplotype for CSD. The haplotype was formed by three genome-wide significant associated markers (BICF2G630233852T>C, BICF2G630233861T>C, BICF2G630233888G>A) on CFA20 with 62% of bilaterally deaf dogs homozygous for the risk haplotype (CCA), while 30% of bilaterally deaf and 45% of hearing dogs carried one copy of the risk haplotype. Animals homozygous or heterozygous for the low-risk haplotype were less likely to be unilaterally deaf. While the association between the risk haplotype and deafness is incomplete, animals homozygous for the risk haplotype were 10-times more likely to be bilaterally deaf. Although the underlying causative variants are yet to be discovered, results from this study can now assist with reducing deafness in Dalmatian dogs.

Lessons From New South Wales, Queensland, and British Columbia to Assist South Africa in Adequately Regulating the Keeping of Assistance Animals by Disabled Persons in Sectional Title Schemes

South African legislation contains only one subrule in the Sectional Titles Schemes Management Regulations about the keeping of assistance animals in sectional title schemes. This subrule provides that an owner or occupier suffering from a disability who reasonably requires a guide, hearing, or assistance dog must be considered to have the trustees’ consent to keep that animal in a section and to accompany it on the common property. I submit that this subrule falls hopelessly short of regulating this matter adequately and that lessons in this regard can be learned from the comparable Australian jurisdictions of New South Wales and Queensland, and the Canadian jurisdiction of British Columbia. First, this subrule makes no reference to anti-discrimination legislation or legislation dealing with the keeping of dogs which is found in the comparable provisions in the selected jurisdictions. Second, no clear distinction is drawn between service dogs and assistance dogs. It appears that assistance dogs are equated with service dogs which are trained to cater for a specific disability in a disabled person while those suffering from illnesses like depression could also benefit from the mere presence of a dog without any specific training. Third, the rule applies only to assistance dogs while the United States, for example, also provides for miniature horses and Capuchin monkeys to assist persons with disabilities. Fourth, save for guide and hearing dogs, inadequate provision is made for the training of other types of assistance animals. In some cases, disabled persons are allowed to train their own assistance animals without the animal and the disabled person having to comply with strict competency tests, for example, the “public access test” required in Queensland. Finally, there is no agreement regarding what type of disability would qualify for assistance by an assistance animal or what evidence a disabled owner or occupier must provide as proof that he or she reasonably requires an assistance animal.

Hearing dogs for people with severe and profound hearing loss: a wait-list design randomised controlled trial investigating their effectiveness and cost-effectiveness

BackgroundHearing loss increases the risk of poor outcomes across a range of life domains. Where hearing loss is severe or profound, audiological interventions and rehabilitation have limited impact. Hearing dogs offer an alternative, or additional, intervention. They live permanently with recipients, providing sound support and companionship.MethodsA single-centre, randomised controlled trial (RCT) evaluated the impacts of a hearing dog on mental well-being, anxiety, depression, problems associated with hearing loss (responding to sounds, fearfulness/social isolation), and perceived dependency on others. Participants were applicants to the UK charity ‘Hearing Dogs for Deaf People’. Eligibility criteria were as follows: first-time applicant; applying for a hearing dog (as opposed to other support provided by the charity). Participants were randomised 1:1 to the following: receive a hearing dog sooner than usual [HD], or within the usual application timeframe (wait-list [WL] comparator). The primary outcome was mental well-being (Short Warwick-Edinburgh Mental Well-Being Scale) 6 months (T1) after HD received a hearing dog. The cost-effectiveness analysis took a health and social care perspective.ResultsIn total, 165 participants were randomised (HD n = 83, WL n = 82). A total of 112 (67.9%) were included in the primary analysis (HD n = 55, WL n = 57). At T1, mental well-being was significantly higher in the HD arm (adjusted mean difference 2.53, 95% CI 1.27 to 3.79, p < 0.001). Significant improvements in anxiety, depression, functioning, fearfulness/social isolation, and perceived dependency, favouring the HD arm, were also observed. On average, HD participants had used fewer statutory health and social care resources. In a scenario whereby costs of provision were borne by the public sector, hearing dogs do not appear to be value for money. If the public sector made a partial contribution, it is possible that hearing dogs would be cost-effective from a public sector perspective.ConclusionsHearing dogs appear to benefit recipients across a number of life domains, at least in the short term. Within the current funding model (costs entirely borne by the charity), hearing dogs are cost-effective from the public sector perspective. Whilst it would not be cost-effective to fully fund the provision of hearing dogs by the public sector, a partial contribution could be explored.Trial registrationThe trial was retrospectively registered with the International Standard Randomised Controlled Trial Number (ISRCTN) registry on 28.1.2019: ISRCTN36452009.

A Missense Mutation in the KLF7 Gene Is a Potential Candidate Variant for Congenital Deafness in Australian Stumpy Tail Cattle Dogs

Congenital deafness is prevalent among modern dog breeds, including Australian Stumpy Tail Cattle Dogs (ASCD). However, in ASCD, no causative gene has been identified so far. Therefore, we performed a genome-wide association study (GWAS) and whole genome sequencing (WGS) of affected and normal individuals. For GWAS, 3 bilateral deaf ASCDs, 43 herding dogs, and one unaffected ASCD were used, resulting in 13 significantly associated loci on 6 chromosomes, i.e., CFA3, 8, 17, 23, 28, and 37. CFA37 harbored a region with the most significant association (−log10(9.54 × 10−21) = 20.02) as well as 7 of the 13 associated loci. For whole genome sequencing, the same three affected ASCDs and one unaffected ASCD were used. The WGS data were compared with 722 canine controls and filtered for protein coding and non-synonymous variants, resulting in four missense variants present only in the affected dogs. Using effect prediction tools, two variants remained with predicted deleterious effects within the Heart development protein with EGF like domains 1 (HEG1) gene (NC_006615.3: g.28028412G>C; XP_022269716.1: p.His531Asp) and Kruppel-like factor 7 (KLF7) gene (NC_006619.3: g.15562684G>A; XP_022270984.1: p.Leu173Phe). Due to its function as a regulator in heart and vessel formation and cardiovascular development, HEG1 was excluded as a candidate gene. On the other hand, KLF7 plays a crucial role in the nervous system, is expressed in the otic placode, and is reported to be involved in inner ear development. 55 additional ASCD samples (28 deaf and 27 normal hearing dogs) were genotyped for the KLF7 variant, and the variant remained significantly associated with deafness in ASCD (p = 0.014). Furthermore, 24 dogs with heterozygous or homozygous mutations were detected, including 18 deaf dogs. The penetrance was calculated to be 0.75, which is in agreement with previous reports. In conclusion, KLF7 is a promising candidate gene causative for ASCD deafness.

Are dogs with congenital hearing and/or vision impairments so different from sensory normal dogs? A survey of demographics, morphology, health, behaviour, communication, and activities.

The births of domestic dogs with pigment deletion and associated congenital hearing and/or vision impairments are increasing, as a result of mutations of certain genes expressing popular coat colour patterns (Merle, piebald, Irish spotting). The future of these dogs is often pessimistic (early euthanasia or placement in rescues/fosters, lack of interactions and activities for adults). These pessimistic scenarios result from popular assumptions predicting that dogs with congenital hearing/vision impairments exhibit severe Merle-related health troubles (cardiac, skeletal, neurological), impairment-related behavioural troubles (aggressiveness, anxiety), and poor capacities to communicate, to be trained, and to be engaged in leisure or work activities. However, there is no direct scientific testing, and hence no evidence or refutation, of these assumptions. We therefore addressed an online questionnaire to owners of 223 congenitally sensory impaired (23 vision impaired, 63 hearing impaired, 137 hearing and vision impaired) and 217 sensory normal dogs from various countries. The sensory normal cohort was matched in age, lifetime with owner, breed and sex with the sensory impaired cohort, and was used as a baseline. The questionnaire assessed demographics, morphology, sensory impairments, health and behavioural troubles, activities, and dog-owner communication. Most hearing and/or vision impaired dogs exhibited abnormal pigment deletion in their coat and irises. Vision impaired dogs additionally exhibited ophthalmic abnormalities typically related to Merle. The results are opposed to all above-listed assumptions, except for neurological troubles, which were more frequently reported in sensory impaired dogs. However, we suggest that this finding could be partially accounted for by a lack of diagnosis of breed-related drug sensitivity and impairment-related compulsive behaviours. Results about communication and activities are particularly optimistic. The need for future studies of numerous dogs from various breeds tested for Merle, piebald and medical-drug-resistance genes, and the beneficial effects that present and future research may have on the future of sensory impaired dogs, are discussed.

To live with a wagging tailed assistant – Service and hearing dog ownership from the perspective of Swedish owners

Individuals who have a functional or health impairment, are often in great need of conventional healthcare, social care and support, as well as help from family and friends. The use of dogs may be an important assistive support for this population. Assistance dogs are trained to assist with their owners’ specific needs. The aim of this study is to explore service and hearing dog ownership from the owner´s perspective, by examining the owner's expectations before training a dog, and experiences after having a certified dog. This study was designed as a longitudinal intervention study with pre‐post design. The participants included in the study trained their own dogs to become service or hearing dogs. A number of open‐ended questions were answered by the participants before the training of the dog started, three months after the dog was certified, and 1–3 years after the first follow‐up. Data were analysed using thematic content analysis. The participants’ expectations of what the dog would contribute after being certified was high. Their perceived experiences in many ways reflected their expectations. For example, they perceived that the dog contributed to improved health status, a more active lifestyle, improved ability to feel secure, and that they had become more independent. They also felt that the dog had strengthened their social relationships. Negative experiences were also identified. Not being allowed to bring their dog into public places and negative attitudes from other people were examples of this. This study shows that individuals being supported by an assistance dog experience the dog as an invaluable help in their everyday life. By improving the owners’ lives in many ways, a certified service or hearing dog is a novel and important assistive support for people with a functional or health impairment.

Decline in prevalence of congenital sensorineural deafness in Dalmatian dogs in the United Kingdom.

BackgroundCongenital sensorineural deafness (CSD) is the most common type of deafness in Dalmatian dogs.ObjectivesTo use results of CSD screening in Dalmatian dogs in the United Kingdom in genetic analysis and to determine any changes in the prevalence of CSD in this breed over time.AnimalsA total of 8955 Dalmatian puppies undergoing hearing function screening using brainstem auditory evoked response (BAER) between July 1992 and February 2019.MethodsResults of BAER testing and pigmentation phenotypic data were linked to the UK Kennel Club Dalmatian pedigree database. Mixed model analysis was used to estimate variance parameters.ResultsThe overall prevalence of CSD was 17.8% (13.4%, unilateral; 4.4%, bilateral). Heritability of CSD was approximately 0.3 (across models) and significantly >0. Genetic correlations between CSD and blue irises (+0.6) and pigmented head patch (−0.86) were large in magnitude and significantly different form 0. Significant improving phenotypic and genetic trends were identified, likely as the result of selection against deafness, equivalent to avoiding breeding with the 4% to 5% of animals with the highest genetic risk of CSD.Conclusions and Clinical ImportanceA decrease in the prevalence and genetic risk of CSD implies breeders have been selecting for hearing dogs. Selective breeding based on estimated breeding values (EBVs) can help further decrease the prevalence of CSD in Dalmatians in the future.

Effectiveness and Cost-Effectiveness of Receiving a Hearing Dog on Mental Well-Being and Health in People With Hearing Loss: Protocol for a Randomized Controlled Trial.

BackgroundPeople with hearing loss, particularly those who lose their hearing in adulthood, are at an increased risk of social isolation, mental health difficulties, unemployment, loss of independence, risk of accidents, and impaired quality of life. In the United Kingdom, a single third-sector organization provides hearing dogs, a specific type of assistance dog trained to provide sound support to people with hearing loss. These dogs may also deliver numerous psychosocial benefits to recipients. This has not previously been fully investigated.ObjectiveThe study aims to evaluate the impact of a hearing dog partnership on the lives of individuals with severe or profound hearing loss.MethodsA 2-arm, randomized controlled trial will be conducted within the United Kingdom with 162 hearing dog applicants, aged 18 years and older. Participants will be randomized 1:1 using a matched-pairs design to receive a hearing dog sooner than usual (intervention arm: arm B) or to receive a hearing dog within the usual timeframe (comparator arm: arm A). In the effectiveness analysis, the primary outcome is a comparison of mental well-being 6 months after participants in arm B have received a hearing dog (arm A have not yet received a hearing dog), measured using the Short Warwick Edinburgh Mental Well-Being Scale. Secondary outcome measures include the Patient Health Questionnaire-9, Generalized Anxiety Disorder-7, and Work and Social Adjustments Scale. An economic evaluation will assess the cost-effectiveness, including health-related quality-adjusted life years using the EuroQol 5 Dimensions and social care–related quality-adjusted life years. Participants will be followed up for up to 2 years. A nested qualitative study will investigate the impacts of having a hearing dog and how these impacts occur.ResultsThe study is funded by the National Institute for Health Research’s School for Social Care Research. Recruitment commenced in March 2017 and is now complete. A total of 165 participants were randomized. Data collection will continue until January 2020. Results will be published in peer-reviewed journals and at conferences. A summary of the findings will be made available to participants. Ethical approval was received from the University of York’s Department of Social Policy and Social Work Research Ethics Committee (reference SPSW/S/17/1).ConclusionsThe findings from this study will provide, for the first time, strong and reliable evidence on the impact of having a hearing dog on people’s lives in terms of their quality of life, well-being, and mental health.Trial RegistrationInternational Standard Randomised Controlled Trial Number Registry ISRCTN36452009; http://www.isrctn.com/ISRCTN36452009International Registered Report Identifier (IRRID)DERR1-10.2196/15452

Geographic Availability of Assistance Dogs: Dogs Placed in 2013-2014 by ADI- or IGDF-Accredited or Candidate Facilities in the United States and Canada, and Non-accredited U.S. Facilities.

Assistance dogs' roles have diversified to support people with various disabilities, especially in the U.S. Data presented here are from the U.S. and Canada non-profit facilities (including both accredited and candidate members that fulfilled partial requirements: all here termed “accredited”) of Assistance Dogs International (ADI) and the International Guide Dog Federation (IGDF), and from non-accredited U.S. assistance dog training facilities, on the numbers and types of dogs they placed in 2013 and 2014 with persons who have disabilities. ADI categories of assistance dogs are for guide, hearing, and service (including for assistance with mobility, autism, psychiatric, diabetes, seizure disabilities). Accredited facilities in 28 states and 3 provinces responded; accredited non-responding facilities were in 22 states and 1 province (some in states/provinces with responding accredited facilities). Non-accredited facilities in 16 states responded. U.S./Canada responding accredited facilities (55 of 96: 57%) placed 2,374 dogs; non-accredited U.S. facilities (22 of 133: 16.5%) placed 797 dogs. Accredited facilities placed similar numbers of dogs for guiding (n = 918) or mobility (n = 943), but many more facilities placed mobility service dogs than guide dogs. Autism service dogs were third most for accredited (n = 205 placements) and U.S. non-accredited (n = 72) facilities. Psychiatric service dogs were fourth most common in accredited placements (n = 119) and accounted for most placements (n = 526) in non-accredited facilities. Other accredited placements were for: hearing (n = 109); diabetic alert (n = 69), and seizure response (n = 11). Responding non-accredited facilities placed 17 hearing dogs, 30 diabetic alert dogs, and 18 seizure response dogs. Non-accredited facilities placed many dogs for psychiatric assistance, often for veterans, but ADI accreditation is required for veterans to have financial reimbursement. Twenty states and several provinces had no responding facilities; 17 of these states had no accredited facilities. In regions lacking facilities, some people with disabilities may find it inconvenient living far from any supportive facility, even if travel costs are provided. Despite accelerated U.S./Canada placements, access to well-trained assistance dogs continues to be limited and inconvenient for many people with disabilities, and the numerous sources of expensive, poorly trained dogs add confusion for potential handlers.

Assistance Dogs for Persons with Hearing Impairment: A Review.

The use of dogs to help people with disabilities has been known for a long time. Assistance dogs carry out a variety of practical tasks for disabled people with appropriate and targeted training, including assisting deaf persons or people with profound hearing loss. The benefits of assistance dogs for persons with hearing impairment (hearing dogs) include a) improved ability to carry out daily tasks through the codified reporting of sounds proper of everyday life and/or of dangerous situations and b) psychosocial aspects such as companionship and sense of protection. The benefits derived from the use of assistance dogs for persons with hearing impairment are less studied compared to those of assistance dogs employed for other disabilities. Moreover, the role of hearing dogs may appear rather controversial considering technological advances in the field of surgical or prosthetic rehabilitation for people with hearing impairment. This article aims to review features and training of hearing dogs, the effects of their employment and legislative aspects for their owners.

The Current Situation and Challenges of Accepting Foreigners with Unapproved Service Dogs According to the Act of Assistance Dogs for Person with Physical Disabilities in Japan

Established in 2002 with the objective to advance and foster accessibility for challenged individuals, The Act on Assistance Dogs for Persons with Physical Disabilities stipulates, in accordance with the physical disability certificate, that guide dogs, service dogs, and hearing dogs be legally accepted as assistance dogs, and that they require legal certification and ID. The demands and uses of guide dogs and hearing dogs are the same between Japan and the Western world, but there has been increasing variation in the Western world for the demand and uses of service dogs. In contrast to Japan, the Western world uses service dogs for mental and emotional challenges, such as developmental disorders and post-traumatic stress disorder (PTSD), none of which are legally accommodated in Japan; there are no regulations requiring the certification, identification, or accountability of these types of service dogs and their users. While emotional support animals are becoming a social issue in the United States, due to its difficulty in distinguishing between “invisible” and “fake” disabilities, Japan is facing the same problem; of the 7,000 dogs that enter Japan each year, 20 are assistance dogs. Japanese airlines operating international flights between North America and Japan have reported that they have over 30 cases of U.S. “service dogs” aboard annually, and that they are facing complaints regarding noise and behavior problems. Heading into the 2020 Tokyo Olympics and Paralympics, it is important that we promote and publicize information concerning the Act on Assistance Dogs, so that we can accept and accommodate for those with dogs that comply with the Act, and to caution those with dogs that do not.

The impact of service and hearing dogs on health-related quality of life and activity level: a Swedish longitudinal intervention study

BackgroundIndividuals with severe disability often require personal assistance and help from informal caregivers, in addition to conventional health care. The utilization of assistance dogs may decrease the need for health and social care and increase the independence of these individuals. Service and hearing dogs are trained to assist specific individuals and can be specialized to meet individual needs. The aim of this study was to describe and explore potential consequences for health-related quality of life, well-being and activity level, of having a certified service or hearing dog.MethodsA longitudinal interventional study with a pre-post design was conducted. At inclusion, all participants in the study had a regular (untrained) companion dog. Data were collected before training of the dog started and three months after certification of the dog. Health-related quality of life was assessed with EQ-5D-3L, EQ-VAS and RAND-36. Well-being was measured with WHO-5 and self-esteem with the Rosenberg Self-Esteem Scale. In addition, questions were asked about physical activity and time spent away from home and on social activities. Subgroups were analyzed for physical service and diabetes alert dogs.ResultsFifty-five owner-and-dog pairs completed the study (30 physical service dogs, 20 diabetes alert dogs, 2 epilepsy alert dogs, and 3 hearing dogs). Initially, study participants reported low health-related quality of life compared with the general population. At follow-up, health-related quality of life measured with the EQ-VAS, well-being and level of physical activity had improved significantly. In the subgroup analysis, physical service dog owners had lower health-related quality of life than diabetes alert dog owners. The improvement from baseline to follow-up measured with EQ-5D statistically differed between the subgroups.ConclusionsThe target population for service and hearing dogs has an overall low health-related quality of life. Our study indicates that having a certified service or hearing dog may have positive impact on health-related quality of life, well-being and activity level. Service and hearing dogs are a potentially important “wagging tail aid” for this vulnerable population, able to alleviate strain, increase independence, and decrease the risk of social isolation.Trial RegistrationThe trial was retrospectively registered in http://clinicaltrial.gov, NCT03270592. September, 2017.

Artist Describes How Art Saved Her Life

Artist Describes How Art Saved Her Life

Animal-Assisted Interventions in Audiology

Animal-Assisted Interventions in Audiology

A survey of the impact of owning a service dog on quality of life for individuals with physical and hearing disability: a pilot study

BackgroundQuality of life refers to a person’s experienced standard of health, comfort and happiness and is typically measured using subjective self-report scales. Despite increasing scientific interest in the value of dogs to human health and the growing demand for trained service dogs, to date no research has reported how service dogs may affect client perceptions of quality of life.MethodWe compared quality of life scores on the 16 item Flanagan quality of life scale from individuals who owned a trained service dog with those who were eligible to receive a dog, but did not yet have one (waiting list control). Data were analysed separately from two groups; those with a service dog trained for individuals with physical disabilities (with physical service dog: n = 72; waiting for a service dog: n = 24; recruited from Dogs for Good database) and those with a hearing service dog (with hearing service dog = 111; waiting for a service dog = 30; recruited from Hearing Dogs for Deaf People database).ResultsWhen controlling for age and gender individuals scored higher on total quality of life scores if they owned a service dog or a hearing service dog, but this was only statistically significant for those with a service dog. Both groups (physical service dog and hearing service dog) scored significantly higher on items relating to health, working, learning and independence if they owned a service dog, in comparison to those on the waiting list. Those with a physical service dog also scored significantly higher on items relating to recreational activities (including items relating to reading/listening to music, socialising, creative expression), and those involving social interactions (including items relating to participating in organisations, socialising, relationship with relatives). Additionally, those with a physical service dog scored higher on understanding yourself and material comforts than those on the waiting list control. In contrast, those with a hearing service dog appeared to receive fewer benefits on items relating to social activities.ConclusionsOwning a service dog can bring significant specific and potentially general benefits to the quality of life of individuals with physical disabilities and hearing impairments. These benefits may have considerable implications for individuals with disabilities, society and the economy by promoting independence, learning and working abilities.

A comparison of the brainstem auditory evoked response in healthy ears of unilaterally deaf dogs and bilaterally hearing dogs

AimsAuditory plasticity in response to unilateral deafness has been reported in various animal species. Subcortical changes occurring in unilaterally deaf young dogs using the brainstem auditory evoked response have not been evaluated yet. The aim of this study was to assess the brainstem auditory evoked response findings in dogs with unilateral hearing loss, and compare them with recordings obtained from healthy dogs.MethodsBrainstem auditory evoked responses (amplitudes and latencies of waves I, II, III, V, the V/I wave amplitude ratio, wave I-V, I-III and III-V interpeak intervals) were studied retrospectively in forty-six privately owned dogs, which were either unilaterally deaf or had bilateral hearing. The data obtained from the hearing ears in unilaterally deaf dogs were compared to values obtained from their healthy littermates.ResultsStatistically significant differences in the amplitude of wave III and the V/I wave amplitude ratio at 75 dB nHL were found between the group of unilaterally deaf puppies and the control group. The recordings of dogs with single-sided deafness were compared, and the results showed no statistically significant differences in the latencies and amplitudes of the waves between left- (AL) and right-sided (AR) deafness.ConclusionsThe recordings of the brainstem auditory evoked response in canines with unilateral inborn deafness in this study varied compared to recordings from healthy dogs. Future studies looking into electrophysiological assessment of hearing in conjunction with imaging modalities to determine subcortical auditory plasticity and auditory lateralization in unilaterally deaf dogs are warranted.