Top-down solar modulation of climate: evidence for centennial-scale change

Indigenous health: Time for top-down change?

A year after the Truth and Reconciliation Commission’s call to action, public health experts say indigenous health won’t improve without major system change. Last June, the commission issued a comprehensive treatment plan for healing the trauma inflicted on indigenous communities under Canada’s residential schools system — but not much has happened. Eight of the commission’s 94 recommendations ...

Top-down modulation of attention by emotion

Due to their evolutionary salience, threatrelated stimuli, such as snakes, spiders, and angry faces constitute a special class of stimuli believed to capture attention in an involuntary, bottom-up manner. Most research in affective neuroscience has focused on unraveling neural pathways that support this “automatic” capture of attention by emotional stimuli (Vuilleumier and Driver, 2007). Howeve...

Top-down modulation and normal aging.

Normal aging is characterized by cognitive deficits that cross multiple domains and impair the ability of some older individuals to lead productive, high-quality lives. One of the primary goals of research in our laboratories is to study age-related alterations in neural mechanisms that underlie a wide range of cognitive processes so that we may generate a unifying principle of cognitive aging....

Top-down modulation in visual working memory

Evidence for solar wind modulation of lightning

The response of lightning rates over Europe to arrival of high speed solar wind streams at Earth is investigated using a superposed epoch analysis. Fast solar wind stream arrival is determined from modulation of the solar wind Vy component, measured by the Advanced Composition Explorer spacecraft. Lightning rate changes around these event times are determined from the very low frequency arrival...