Smell your self: Olfactory stimulation improves self-concept in Alzheimer’s disease

Glachet, Ophélie; Haj, Mohamad El

doi:10.1080/09602011.2020.1831553

Cited by 8 publications

(16 citation statements)

References 63 publications

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“…Among the different approaches, the use of sensory-based reminiscence therapy appears particularly promising since sensory cues could provide a more direct access to autobiographical memories and thus minimize the demand on executive control processes (Kirk and Berntsen, 2018;Glachet and El Haj, 2019). For instance, the use of odors or music cues have been found to enhance the specificity and the phenomenological experience of memories evoked by people with Alzheimer's disease (El Haj et al, 2012;Glachet and El Haj, 2019), and odors also improved the access to self-concepts (Glachet and El Haj, 2020). These previous results thus contrast with some of our current findings in healthy subjects.…”

Section: Discussionmentioning

confidence: 99%

The Proust Machine: What a Public Science Event Tells Us About Autobiographical Memory and the Five Senses

et al. 2021

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Our senses are constantly stimulated in our daily lives but we have only a limited understanding of how they affect our cognitive processes and, especially, our autobiographical memory. Capitalizing on a public science event, we conducted the first empirical study that aimed to compare the relative influence of the five senses on the access, temporal distribution, and phenomenological characteristics of autobiographical memories in a sample of about 400 participants. We found that the access and the phenomenological features of memories varied as a function of the type of sensory cues, but not their temporal distribution. With regard to their influence on autobiographical memory, an overlap between some senses was found, with on one hand, olfaction and taste and, on the other, vision, audition, and touch. We discuss these findings in the light of theories of perception, memory, and the self, and consider methodological implications of the sensory cuing technique in memory research, as well as clinical implications for research in psychopathological and neuropsychological populations.

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Section: Discussionmentioning

confidence: 99%

The Proust Machine: What a Public Science Event Tells Us About Autobiographical Memory and the Five Senses

et al. 2021

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“…Among the 20 studies, eight used a control group composed of older people of similar age to those with dementia ( n = 5) (El Haj et al, 2018; Glachet et al, 2019; Glachet & El Haj, 2019, 2020a, 2020b), people with dementia with the same demographic characteristics to the experimental group ( n = 2) (Sakamoto et al, 2012; Takahashi et al, 2020) and older and young people ( n = 1) (Lopis et al, 2021). Jimbo et al (2009) and Takahashi et al (2020) included care staff and caregivers in their sample.…”

Section: Resultsmentioning

confidence: 99%

“…Fourteen studies used a quasi-experimental design ( El Haj et al, 2018 ; Glachet et al, 2019 ; Glachet & El Haj, 2019 , 2020a , 2020b ; Gray & Clair, 2002 ; Henry et al, 1994 ; Holmes et al, 2002 ; Jimbo et al, 2009 ; Lopis et al., 2021 ; Moorman Li et al, 2017 ; Snow et al, 2004 ; Sulmont-Rossé et al, 2018 ; Takeda et al., 2017 ), five studies used an experimental design ( Fu et al, 2013 ; Lin et al, 2007 ; Sakamoto et al, 2012 ; Smallwood et al 2001 ; Takahashi et al, 2020 ) and one was a case study ( Brooker et al, 1997 ). No qualitative or mixed methods studies were identified from the search strategy used.…”

Section: Resultsmentioning

confidence: 99%

“…The included studies varied greatly in terms of stages and subtypes of dementia. Six studies included people with mild dementia ( El Haj et al, 2018 ; Glachet et al, 2019 ; Glachet & El Haj, 2019 , 2020a , 2020b ; Lopis et al., 2021 ), one with moderate dementia ( Sakamoto et al, 2012 ) and six with severe symptoms ( Brooker et al., 1997 ; Henry et al, 1994 ; Holmes et al, 2002 ; Snow et al, 2004 ; Smallwood et al, 2001 ; Takeda et al, 2017 ). Five other studies included those with different stages of dementia, including mild to moderate and moderate to severe ( Fu et al, 2013 ; Jimbo et al, 2009 ; Lin et al, 2007 ; Sulmont-Rossé et al, 2018 ; Takahashi et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

“…Subtypes of dementia were not provided in six studies (Gray & Clair, 2002;Henry et al, 1994;Moorman Li et al, 2017;Sakamoto et al, 2012;Smallwood et al, 2001;Takeda et al, 2017). Among the 20 studies, eight used a control group composed of older people of similar age to those with dementia (n = 5) (El Haj et al, 2018;, 2020a, 2020b, people with dementia with the same demographic characteristics to the experimental group (n = 2) (Sakamoto et al, 2012;Takahashi et al, 2020) and older and young people (n = 1) (Lopis et al, 2021). Jimbo et al (2009) and Takahashi et al (2020) included care staff and caregivers in their sample.…”

Section: Study Characteristicsmentioning

confidence: 99%

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Olfactory stimulation for people with dementia: A rapid review

et al. 2022

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There is a growing interest in using olfactory (smell) stimulation in dementia care. This study aims to extend current knowledge by synthesising the evidence on the efficacy of interventions using olfactory stimulation for people with dementia and to assess the effects of different types of odours and administration methods using a mixed methods approach. The rapid review was conducted based on searches in six electronic databases. A narrative approach was applied to assess 20 studies included in the review. Fourteen studies used a quasi-experimental design, five studies used an experimental design and one was a case study. High heterogeneity was found on odours and methods of application used, with the majority of studies administering lavender oil using a diffuser. Mixed results were reported on the benefits of olfactory stimulation on responsive behaviours and cognitive function. Although the evidence available is limited, encouraging results were found regarding olfactory stimulation and increased sleep duration, food intake and improved balance. It was not possible to draw any overall conclusion in relation to the effect of olfactory stimulation. However, this review shows promising results that support further investigation of olfactory stimulation as a nonpharmacological intervention for people with dementia. The review is limited due to the low to moderate quality of studies included. Furthermore, the broad range of approaches was employed, and comparison between the studies was difficult. Further high-quality mixed method studies using robust and detailed protocols are needed to clarify the effects of olfactory stimuli and any other factors that may influence the responses of people with dementia.

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The smell of my self: Odor exposure increases the number of self-defining memories in Alzheimer’s disease

et al. 2021

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Smell your self: Olfactory stimulation improves self-concept in Alzheimer’s disease

Cited by 8 publications

References 63 publications

The Proust Machine: What a Public Science Event Tells Us About Autobiographical Memory and the Five Senses

The Proust Machine: What a Public Science Event Tells Us About Autobiographical Memory and the Five Senses

Olfactory stimulation for people with dementia: A rapid review

The smell of my self: Odor exposure increases the number of self-defining memories in Alzheimer’s disease

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