What enables individuals to act together? Recent discoveries suggest that a variety of mechanisms are involved. But something fundamental is yet to be investigated. In joint action, agents represent a collective goal, or so it is often assumed. But how, if at all, are collective goals represented in joint action and how do such representations impact performance? To investigate this question we adapted a bimanual paradigm, the circle-line drawing paradigm, to contrast two agents acting in parallel with two agents performing (...) a joint action. Participants were required to draw lines or circles while observing circles or lines being drawn. The findings indicate that interpersonal motor coupling may occur in joint but not parallel action. This suggests that participants in joint actions can represent collective goals motorically. (shrink)

Transcranial magnetic stimulation studies have demonstrated increased cortical facilitation and reduced inhibition following aerobic exercise, even when examining motor regions separate to the exercised muscle group. These changes in brain physiology following exercise may create favorable conditions for adaptive plasticity and motor learning. One candidate mechanism behind these benefits is the increase in brain-derived neurotropic factor observed following exercise, which can be quantified from a venous blood draw. The aim of this study was to investigate changes in motor cortex excitability (...) and inhibition of the upper limb, and circulating BDNF, following high-intensity interval training on a stationary bicycle. Nineteen sedentary adults participated in a randomized crossover design study involving a single bout of high-intensity interval cycling for 20 min or seated rest. Venous blood samples were collected, and transcranial magnetic stimulation was used to stimulate the extensor carpi radialis, where motor evoked potentials were recorded pre- and post-condition. Following exercise, there was a significant increase in corticospinal excitability measured at 120% of resting motor threshold and a reduction in short-interval cortical inhibition. There was a non-significant 23.6% increase in BDNF levels. Collectively, these results reflect a net reduction in gamma aminobutyric acid ergic synaptic transmission and increased glutamatergic facilitation, resulting in increased corticospinal excitability. This study supports the notion that acute high-intensity exercise provides a potent stimulus for inducing cortical neuroplasticity, which may support enhanced motor learning. (shrink)

This volume contains Gianfrancesco Pico's Life of his uncle Giovanni Pico and also Giovanni's Oration. Gianfrancesco's Life opens a collection that omits Giovanni's Conclusions but includes the speech that we - unlike Pico - know as an Oration on the Dignity of Man. He wrote the Oration to introduce the Conclusions, but his nephew's editorial decision cut the theses off from the speech that their author had connected with them. Several times in the Oration, the orator mentioned "theorems" to be (...) proposed in the Conclusions: he clearly saw the book and the speech as tools for the same task. Either Gianfrancesco missed his uncle's intentions, which seems unlikely, or he meant to seal off his other writings - including the Oration - from a book that he found embarrassing for himself and his relative and too risky to make public. This is the fact of the matter: Gianfrancesco left the Conclusions unpublished while publishing the Oration in a collection introduced by his Life. Both the speech and the biography are presented here, in this edition, in the same way - apart from the Conclusions: this reflects the situation in 1496 and respects Gianfrancesco's choice, even though his decision blocked understanding of the speech for many years. Today, with access to all the relevant texts in many versions, readers can move from one work to another as needed. (shrink)

t. 1. Scripta in editione Basilensi anno 1573 collecta. 2 v.

Famous debate between E. Barbaro and G. Pico della Mirandola in 1485 concerning humanism and scholasticism and the role of rhetoric.

Esito di un convegno tenutosi a Roma nel 2003, i saggi raccolti in L’arte e i linguaggi della percezione offrono una variegata panoramica delle posizioni maturate nel dibattito intorno al programma epistemico di Ernst H. Gombrich, prendendo in esame non soltanto gli aspetti più squisitamente filologici della sua biografia intellettuale — la formazione, i rapporti con la scuola di Vienna, la complicata relazione con Warburg e la scuola iconologica — ma anche i fondamenti filosofici del suo pen...