Relationships between task-induced modifications of global statistical network characteristics and recall performances.

<p>Scatterplots of relative deviations of the average shortest path length (top) and of the clustering coefficient (bottom) during incidental (left) and intentional learning (right) from the respective values during the baseline recording and subsequent recall performances and . A significant correlation could only be observed between the relative clustering coefficient and the number of recalled words during (linear regression is represented with a solid black line).</p

Comparison of the distributions of task-induced modifications of global statistical network characteristics.

<p>Box-plots (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0080273#pone-0080273-g003" target="_blank">Figure 3</a> for details) of the relative deviation of the average shortest path length (left) and of the clustering coefficient (right) during the learning tasks ( and ) from the respective values during the baseline recording .</p

Neuropsychological test schedule.

<p>The schedule consists of two blocks of tasks which involve incidental (block 1) or intentional (block 2) learning and retrieval of verbal material. Each block is preceded by a rest phase of 5 minutes duration. Learning tasks ( and , 3 minutes duration) are followed by a figural fluency task (FF, 1 minutes duration) and a rest phase of 3 minutes duration. Retrieval tasks ( and , 3 minutes duration) consist of a free recall of words listened to/memorized during the respective learning task.</p

Exemplary temporal evolutions of global statistical network characteristics during different neuropsychological tasks.

<p>Time courses of average shortest path length (left) and clustering coefficient (right) from an epilepsy patient (red lines) and a control subject (black lines). Baseline recording (); incidental learning task (); intentional learning task (). Lines are for eye-guidance only.</p

Comparison of the distributions of global statistical network characteristics from 33 subjects for different neuropsychological tasks.

<p>Box-plots of the average shortest path length (left) and the clustering coefficient (right) for the baseline recording () and for the incidental () and the intentional learning task (). Bottom and top of a box are the first and third quartiles, and the band inside a box is the median. The ends of the whiskers represent the minimum and maximum of the data.</p