Perceived modulation magnitudes of second‐formant, center‐frequency variations

Aging alters surround modulation of perceived contrast.

It is well established that many visual functions deteriorate with age. Perhaps counter-intuitively, a recent study revealed that older people actually require less time to discriminate the direction of motion of large, high contrast moving stimuli than young adults (L. R. Betts, C. P. Taylor, A. B. Sekuler, & P. J. Bennett, 2005). L. R. Betts et al. (2005) proposed their finding as evidence fo...

Magnitudes of fractions 1 RUNNING HEAD: MAGNITUDES OF FRACTIONS Representations of the Magnitudes of Fractions

We tested whether adults can use integrated, analog, magnitude representations to compare the values of fractions. The only previous study on this question concluded that even college students cannot form such representations and instead compare fraction magnitudes by representing numerators and denominators as separate whole numbers. However, atypical characteristics of the presented fractions...

Influence of MTHFR gene variations on perceived stress modification: Preliminary results of NURSE study

Background: High level of perceived stress in nurses is due to a genetic predisposition and environmental stressors. The aim of NURSE (Nursing Unacquainted Related Stress Etiologies) study was to investigate the association of C677T MTHFR gene polymorphism and stress perception among nurses.    Methods: In this comprehensive study, 216 female nurses were recruited. Perceived stress w...

Grounding magnitudes

Over the last few decades, different studies have been directed toward a better understanding of how humans use perceptual information in order to estimate magnitudes. Converging data from different research domains indicate that the processing of time, space, and other quantities frequently unfold together in the human brain and cognition. The idea of a common metric that regulates the ability...

Mental Magnitudes