New work suggests that blood oxygen level-dependent (BOLD) signal variability can be a
much more powerful index of human age than mean activation, and that older brains are …

The relationship between blood oxygenation level-dependent (BOLD) functional MRI (fMRI)
signal and the underlying neural electrical activity in humans is a topic of intense interest to …

The “testing effect” refers to the beneficial effects on memory performance from being tested,
a phenomenon of potentially substantial implications in educational settings. While the effect …

Associative learning is a dynamic process that allows us to incorporate new knowledge
within existing semantic networks. Even after years, a seemingly stable association can be …

Learning is the process of accumulating information. Repetition can make the process of
retrieving information more efficient. The mechanisms by which repetition facilitates the …

In this paper, we study the statistical properties of bookmarking behaviors in Delicious. com.
We find that the inter-event time (τ) distributions of bookmarking decay in a power-like …

One of the central questions in cognitive neuroscience is the precise neural representation,
or brain pattern, associated with a semantic category. In this study, we explored the …

In this study, we investigated whether there is a repetition benefit in mental rotation that is
independent of stimulus repetition (ie, due to increased efficiency in postencoding …

Humans must integrate information to make decisions. This thesis is concerned with
studying neural mechanisms of decision making, and combines tools from economics …