Are psychophysical functions derived from line bisection reliable?

Psychophysical functions are used to characterize both normal perception and altered perception among patients with neglect, yet the reliability of these functions is rarely examined. The present study examined two-week, test-retest reliability for power functions derived from line bisection data among 58 normal, young and old, male and female subjects. Power function exponents and constants were, at best, moderately reliable over time. The size of the exponent tended to decrease at retesting. Reliability coefficients varied by age and gender; they were highly significant for young men, marginally significant for older men, and non-significant for women. Race influenced reliability as coefficients were significant for Caucasian subjects but not for African American subjects. Age and gender effects in this study parallel those in the literature on pseudoneglect, and they may reflect hemispheric differences in visuo-spatial processing, magnitude estimation, or both. (JINS, 2003, 9, 72–78.)

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Extended High-Frequency Thresholds in Older Adults

Journal of Speech Language and Hearing Research ◽

10.1044/jslhr.4001.208 ◽

1997 ◽

Vol 40 (1) ◽

pp. 208-214 ◽

Cited By ~ 31

Author(s):

Lois J. Matthews ◽

Fu-Shing Lee ◽

John H. Mills ◽

Judy R. Dubno

Keyword(s):

High Frequency ◽

Age Groups ◽

Test Session ◽

Normal Hearing ◽

Gender Effects ◽

Frequency Range ◽

Age And Gender ◽

High Frequencies ◽

And Gender ◽

Test Retest Reliability

Most measures of auditory sensitivity at extended high frequencies (frequencies greater than 8 kHz) have been obtained from listeners with normal hearing less than 40 years of age. The purpose of this study was (a) to measure thresholds at frequencies above 8 kHz in older listeners who, as a group, have elevated thresholds at lower frequencies, and (b) to assess test-retest reliability, age and gender effects, and the influence of thresholds below 8 kHz. Extended high-frequency (EHF) thresholds were measured for 162 older listeners (60–79 years) using a commercially available high-frequency audiometer, with a frequency range of 8 to 18 kHz and an intensity range of 0 to 110 dB SPL. Thresholds were measured once at the beginning of a 1- to 2-hour test session and then remeasured at the end of the test session. EHF thresholds of older listeners with normal hearing at conventional audiometric frequencies were substantially higher than the thresholds reported for younger listeners with normal hearing by Dreschler and van der Hulst (1987). EHF thresholds of older listeners with hearing loss at conventional audiometric frequencies were further elevated as compared to older listeners with normal hearing. Differences in EHF thresholds between females and males were either not present or were reduced when gender differences in conventional audiometric thresholds were taken into account. No significant differences were seen in thresholds at 8 kHz and higher between the 60- to 69- and 70- to 79-year-old age groups. Results also indicated that thresholds above 8 kHz can be measured in older listeners within a clinically acceptable ±10 dB test-retest range.

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The comparison and interaction of age and gender effects on cycling mode-share: An analysis of commuting in England and Wales

Journal of Transport & Health ◽

10.1016/j.jth.2020.101004 ◽

2021 ◽

Vol 20 ◽

pp. 101004

Author(s):

Nick Grudgings ◽

Susan Hughes ◽

Alex Hagen-Zanker

Keyword(s):

Gender Effects ◽

Age And Gender ◽

England And Wales ◽

Mode Share ◽

And Gender

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A Comprehensive Analysis of Age and Gender Effects in European Portuguese Oral Vowels

Journal of Voice ◽

10.1016/j.jvoice.2020.10.021 ◽

2020 ◽

Author(s):

Luciana Albuquerque ◽

Catarina Oliveira ◽

António Teixeira ◽

Pedro Sa-Couto ◽

Daniela Figueiredo

Keyword(s):

Comprehensive Analysis ◽

Gender Effects ◽

Age And Gender ◽

European Portuguese ◽

And Gender

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Age and gender effects on joint ranges of motion of the main joints involved in car accessibility movements

Computer Methods in Biomechanics & Biomedical Engineering ◽

10.1080/10255840701479883 ◽

2007 ◽

Vol 10 (sup1) ◽

pp. 177-178 ◽

Cited By ~ 3

Author(s):

E. Chateauroux ◽

X. Wang ◽

P. Pudlo

Keyword(s):

Gender Effects ◽

Age And Gender ◽

And Gender

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Age and gender effects on quantitative sudomotor axon reflex testing and application to idiopathic pure sudomotor failure

Autonomic Neuroscience ◽

10.1016/j.autneu.2010.07.024 ◽

2010 ◽

Vol 158 (1-2) ◽

pp. 137

Author(s):

Kimiko Yoshimaru ◽

Yoshihiko Nakazato ◽

Naotoshi Tamura ◽

Nobuo Araki

Keyword(s):

Gender Effects ◽

Age And Gender ◽

Axon Reflex ◽

Reflex Testing ◽

And Gender

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Biophysical properties of the human finger for touch comprehension: influences of ageing and gender

Royal Society Open Science ◽

10.1098/rsos.170321 ◽

2017 ◽

Vol 4 (8) ◽

pp. 170321 ◽

Cited By ~ 8

Author(s):

A. Abdouni ◽

M. Djaghloul ◽

C. Thieulin ◽

R. Vargiolu ◽

C. Pailler-Mattei ◽

...

Keyword(s):

Mechanical Properties ◽

Adhesive Force ◽

Arithmetic Mean ◽

Tactile Perception ◽

Gender Effects ◽

Biophysical Properties ◽

Age And Gender ◽

Positive Correlation ◽

And Gender ◽

Human Finger

The human finger plays an extremely important role in tactile perception, but little is known about how age and gender affect its biophysical properties and their role in tactile perception. We combined studies on contact characteristics, mechanical properties and surface topography to understand age and gender effects on the human finger. The values obtained regarding contact characteristics (i.e. adhesive force) were significantly higher for women than for men. As for mechanical properties (i.e. Young's modulus E ), a significant and positive correlation with age was observed and found to be higher for women. A positive correlation was observed between age and the arithmetic mean of surface roughness for men. However, an inverse age effect was highlighted for women. The age and gender effects obtained have never been reported previously in the literature. These results open new perspectives for understanding the weakening of tactile perception across ages and how it differs between men and women.

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