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Braz J Otorhinolaryngol. 2016 Jul-Aug;82(4):442-6. doi: 10.1016/j.bjorl.2015.08.027. Epub 2016 Feb 2.

Subjective visual vertical with the bucket method in Brazilian healthy individuals.

Author information

1
Postgraduate Program in Human Communication Disorders, Campo Fonoaudiológico, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil. Electronic address: maristelamian@yahoo.com.br.
2
Otorhinolaryngological Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil.
3
Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil; School of Speech Therapy and Audiology Specialization, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil.
4
Otorhinolaryngology, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil.
5
Discipline of Otology and Neurotology, Escola Paulista de Medicina, Universidade Federal de São Paulo (EPM-UNIFESP), São Paulo, SP, Brazil.

Abstract

INTRODUCTION:

The capacity of a healthy individual to estimate the true vertical in relation to the Earth when a fluorescent line is aligned in a completely dark room is called the subjective visual vertical.

OBJECTIVE:

To evaluate subjective visual vertical using the bucket method in healthy Brazilian individuals.

METHODS:

Binocular subjective visual vertical was measured in 100 healthy volunteers, 50 females and 50 males. The volunteers indicated the estimated position in which a fluorescent line inside a bucket reached the vertical position. A total of ten repetitions were performed, five clockwise and five counterclockwise. Data were tabulated and analyzed statistically.

RESULTS:

It was observed that the highest concentration of absolute values of vertical deviation was present up to 3°, regardless of gender, and the vertical deviation did not increase with age. The analysis of the mean of the absolute values of deviations from the vertical of 90% of the sample showed a maximum value of 2.6°, and at the analysis of 95%, the maximum value was 3.4° deviation from the vertical.

CONCLUSION:

The bucket method is easy to perform and interpret when assessing the deviation of the subjective visual vertical in relation to the true vertical in healthy Brazilian individuals.

KEYWORDS:

Ear; Equilíbrio postural; Membrana otolítica; Orelha; Otolithic membrane; Postural balance

PMID:
26895747
DOI:
10.1016/j.bjorl.2015.08.027
[Indexed for MEDLINE]
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