Numerical Processing
In collaboration with Orly Rubinsten, Avishay Henik, Dana Ganor, and Joseph Tzelgov

We are conducting several combined ERP/fMRI studies aimed at studying the cognitive mechanisms and brain structures involved in basic numerical processing.

The Development of the Mental Number Line

We address the development of the mental number line and the automatic access to it. We teach first grade children a new number line composed of artificial three-dimensional figures called “Fribbles.” After the practice phase, the distance effect and the size-congruity effect in reaction times and ERPs  are tested using a task similar to the numerical Stroop task.

The Development of Ordinal Knowledge
In collaboration with Michal Pinhas and Joseph Tzelgov

This project focuses on the development of ordinal processing in early childhood using EEG and behavioral methods.  We study ordinal processing of numerical and non-numerical information and how these abilities interact with one another.  We also examine the interplay between ordinal and cardinal numerical knowledge during the time in which children acquire symbolic number knowledge.

Negative Numbers
In collaboration with Joseph Tzelgov

Are the negative numbers special? We measure the subject’s event-related potentials while they perform numerical tasks involving positive and negative numbers. So far, the results suggest that the human brain represents and processes the negative numbers in a special and different manner.

Development of Number Processing in Children
In collaboration with Avishai Henik

This study focuses on the automatic processing of numbers and its course of development through the first years of school, with an emphasis on the development of the understanding of number words and Arabic numerals. The behavioral paradigm used in this study is the numerical Stroop task and the Validation of Expectation task. Along with behavioral effects, the ERP technique is used to explore the brain development in this area.

Development of Error Detection in Artificial Number Learning

This study attempts to trace the process of learning artificial numbers and the creation of the internal mental representation of the number line (Gibson figures).

Subitizing and Anxiety

This study focuses on small number perception in young adults and young children as a function of their anxiety.

Number Representation
In collaboration with Joseph Tzelgov

This study focuses on investigating how preschool and elementary students represent numbers on a number line.

Abnormal Number Processing
In collaboration with Orly Rubinsten

This study compares numerical processing and error detection within arithmetical equations in participants with Dyscalculia and participants with ADHD.