Mapping numerical magnitudes along the right lines: differentiating between scale and bias.

Journal of Experimental Psychology: General Mapping Numerical Magnitudes Along the Right Lines: Differentiating Between Scale and Bias

No inherent left and right side in human 'mental number line': evidence from right brain damage.

Spatial reasoning has a relevant role in mathematics and helps daily computational activities. It is widely assumed that in cultures with left-to-right reading, numbers are organized along the mental equivalent of a ruler, the mental number line, with small magnitudes located to the left of larger ones. Patients with right brain damage can disregard smaller numbers while mentally setting the mi...

Slow drift of individuals' magnitude-to-number mapping

When estimating the number of dots in a set, adults show bias and variability that scale with numerosity. Increasing variance in estimation is thought to reflect constant Weber noise on perceptual magnitude representations, while the increasing bias reflects miscalibrated mappings of number words onto magnitudes. Here we argue that response variability in numerical estimation increases with num...

عملکرد کودکان مبتلا به اختلال بیش فعالی/نقص توجه در یک آزمون توجهی بینایی

  Background : Line bisection test is used for detecting inattention. In this test normal people usually show a rightward bias which indicates right hemisphere dominancy for visuo-spatial attention processing. The performance of people with Attention deficit/Hyperactivity Disorder (ADHD) in these kinds of visuo-spatial tests is different from normal people. The difference could be as a result o...

Overlapping and distinct brain regions involved in estimating the spatial position of numerical and non-numerical magnitudes: an fMRI study.

How are numerical and non-numerical magnitudes processed in the brain? Brain imaging research, primarily using comparison paradigms (i.e. judging which of two magnitudes is larger), has provided strong evidence demonstrating that the intraparietal sulcus (IPS) is a key region for processing both numerical (e.g. Arabic numerals, arrays of dots) and non-numerical magnitudes (e.g. height, brightne...