Yamaguchi Fox-Pigeon Imitation Test: A Rapid Test for Dementia

Yamaguchi, Hideyo; Maki, Yohko; Yamagami, Tetsuya

doi:10.1159/000289819

Cited by 29 publications

(35 citation statements)

References 33 publications

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“…The YFPIT was administered to all participants, and consists of a hand-gesture imitation of a fox contiguous with a pigeon, according to the procedure described previously 14. Briefly, the protocol was as follows:…”

Section: Methodsmentioning

confidence: 99%

The Yamaguchi fox/pigeon-imitation test, a brief cognitive performance rating tool, in a community-dwelling population: normative data for Japanese subjects – a preliminary study

Ishioka

Sugawara

Kaneda

et al. 2014

NDT

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IntroductionScreening tools for dementia should be valid and easy to complete and have a low psychological burden. Consistent with these principles, the Yamaguchi fox/pigeon-imitation test (YFPIT) has been developed. However, there is little information on the utility of the YFPIT for preclinical populations, although the detection of proven prodromal and preclinical states is important.Materials and methodsWe recruited 392 volunteers who were at least 60 years old (139 men and 253 women) and had participated in the Iwaki Health Promotion Project. The YFPIT was administered to all participants.ResultsMost subjects succeeded in imitating the fox gesture regardless of their cognitive function impairment, while the success rates for the pigeon gesture were 75.3% in the normal group and 56.3% in the cognitive impairment group. The sensitivity, specificity, positive predictive value (PV+), and negative predictive value (PV−) were 43.8%, 75.3%, 7.0%, and 97.0%, respectively. The greatest significant difference between the imitation of the pigeon gesture and cognitive impairment was found in females with subjective memory impairments (P=0.001). In that group, the sensitivity, specificity, PV+, and PV− were 100%, 81.9%, 18.8%, and 100%, respectively.ConclusionThis study suggests that the utility of the YFPIT is limited in the general population, but that it is a useful tool in females with subjective memory impairments in a community-dwelling population.

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Section: Methodsmentioning

confidence: 99%

The Yamaguchi fox/pigeon-imitation test, a brief cognitive performance rating tool, in a community-dwelling population: normative data for Japanese subjects – a preliminary study

Ishioka

Sugawara

Kaneda

et al. 2014

NDT

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“…This study was conducted in accordance to the guidelines laid down in the Helsinki Declaration, and the study subjects were randomly selected by informed written consent through screening from the hospital set ups, with help of the Mini Mental State Examination (MMSE) (Folstein et al, 1975) along with Yamaguchi Fox Pigeon Imitation Test (YFPIT) (Yamaguchi et al, 2010). For appropriate sample representation, minimal error and exact prevalence estimation in our target group, the Vadodara city was divided into four zones.…”

Section: Methodsmentioning

confidence: 99%

Anthropometric indices and dietary intake

2013

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Cognitive abnormalities doubly elevate with advancing age, with decreased intake of dietary nutrients. The cognitive assessment undertaken focused on this rampant under-diagnosed cognition. The burgeoning prodromal insidious stage of cognitive impairment demands rapid diagnosis for preserving mental health, or else severe deterioration takes over, leading to compromised mental abilities in the elderly.

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“…We have proposed a hand gesture imitation test, the Yamaguchi fox–pigeon imitation test (YFPIT), which consists of a simple one‐handed sign for ‘fox’ and a complex two‐handed sign for ‘pigeon’, as a rapid, game‐like test for dementia/Alzheimer's disease (AD) that has a low psychological burden 1 . The aim of the YFPIT is to examine the representation of the body state and visuomotor function, which deteriorate from the early stages of AD.…”

Section: Introductionmentioning

confidence: 99%

Yamaguchi fox–pigeon imitation test (YFPIT) for dementia in clinical practice

Yamaguchi

Takahashi

Kosaka³

et al. 2011

Psychogeriatrics

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Background: In out-patient clinics, having simple procedures to check for signs of dementia is invaluable. In the present study, we evaluated the imitation of hand gestures to detect visuomotor deficits in dementia in clinical practice. Methods: In all, 1219 subjects were enrolled in the present study, including 497 with Alzheimer's disease (AD), 98 with dementia with Lewy bodies (DLB), 71 with other types of dementia diseases, 175 with a Clinical Dementia Rating (CDR) of 0.5, and 378 normal controls. All subjects were aged 65 years or older. Subjects were recruited from 10 clinics and two communities. Visuomotor function was evaluated by the Yamaguchi fox-pigeon imitation test (YFPIT), which consists of a simple one-handed sign for 'fox' and a complex two-handed sign for 'pigeon', a rapid, game-like test with low psychological burden. Results: The success rate (successful/total) for imitating the 'pigeon' hand gesture was reduced as the severity of the dementia increased: 85.7% in normal controls, 60.6% in CDR 0.5 (mild cognitive impairment), 39.2% in CDR 1 (mild dementia), 21.2% in CDR 2 (moderate dementia), and 5.7% in CDR 3 (severe dementia). The success rate for imitating the 'pigeon' hand gesture was higher in patients with DLB than AD within the CDR 1 group (51.2% vs 35.4%, respectively), but lower for patients with DLB than AD within the CDR 2 group (12.5% vs 24.4%, respectively). The success of imitating the hand gesture for 'fox' was similar for patients with AD and DLB. Of those subjects who failed to imitate the hand gesture for 'pigeon', 49.5% of those with AD showed the palm-palm pattern (both palms facing outward), suggesting deficits of perspective conversion from the first-person to the third-person. Conversely, 52.8% of patients with DLB showed a dorsum-dorsum pattern (both dorsa facing outwards), suggesting deterioration of visual attention and recognition. Conclusion: In conclusion, the YFPIT is a useful test to detect visuomotor deficits in dementia that can differentiate between AD and DLB.

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Yamaguchi Fox-Pigeon Imitation Test: A Rapid Test for Dementia

Cited by 29 publications

References 33 publications

The Yamaguchi fox/pigeon-imitation test, a brief cognitive performance rating tool, in a community-dwelling population: normative data for Japanese subjects – a preliminary study

The Yamaguchi fox/pigeon-imitation test, a brief cognitive performance rating tool, in a community-dwelling population: normative data for Japanese subjects – a preliminary study

Anthropometric indices and dietary intake

Yamaguchi fox–pigeon imitation test (YFPIT) for dementia in clinical practice

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Yamaguchi Fox-Pigeon Imitation Test: A Rapid Test for Dementia

Cited by 29 publications

References 33 publications

The Yamaguchi fox/pigeon-imitation test, a&nbsp;brief cognitive performance rating tool, in&nbsp;a&nbsp;community-dwelling population: normative data for Japanese subjects &ndash; a preliminary study

The Yamaguchi fox/pigeon-imitation test, a&nbsp;brief cognitive performance rating tool, in&nbsp;a&nbsp;community-dwelling population: normative data for Japanese subjects &ndash; a preliminary study

Anthropometric indices and dietary intake

Yamaguchi fox–pigeon imitation test (YFPIT) for dementia in clinical practice

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The Yamaguchi fox/pigeon-imitation test, a brief cognitive performance rating tool, in a community-dwelling population: normative data for Japanese subjects – a preliminary study

The Yamaguchi fox/pigeon-imitation test, a brief cognitive performance rating tool, in a community-dwelling population: normative data for Japanese subjects – a preliminary study