Although ventral parietal cortex (VPC) activations can be found in a variety of cognitive domains, these activations have been typically attributed to cognitive operations specific to each domain. In this article, we propose a hypothesis that can account for VPC activations across all the cognitive domains reviewed. We first review VPC activations in the domains of perceptual and motor […]
Roberto Cabeza gave the keynote address Feb. 29 at the University of Florida McKnight Brain Institute symposium on aging, memory and cognitive decline. Dr. Cabeza’s talk discussed the idea that older brains work in different ways to complete the same tasks as younger brains. See the news article here.
If you read Japanese, see here or this poster for details on the March 3rd talk in Tsukuba. Roberto Cabeza is one of the Organizers, and will speak for, the Gakushuin International Symposium in Tokyo on March 4th.
Studies of cognitive and neural aging have recently provided evidence of a shift from an early- to late-onset cognitive control strategy, linked with temporally extended activity in the prefrontal cortex (PFC). It has been uncertain, however, whether this age-related shift is unique to PFC and executive control tasks, or whether the functional location might vary […]
Aging is associated with both decreases and increases in brain activity. Whereas age-related decreases usually reflect neural decline, some age-related increases have been linked to functional compensation. Compensatory activations in older adults (OAs) are typically found in the prefrontal cortex (PFC) but in the memory domain we have also found them in the temporal lobes […]
We investigate the neural mechanisms of various episodic retrieval processes, including recovery processes associated with MTL, control processes associated with PFC, and support processes associated with PFC and posterior parietal cortices (PPC). Recovery refers to the access of stored memory traces, in the form of specific contextual details (recollection) or in the form of a […]
Aging is associated with significant decline in the integrity of white matter (WM), and this decline contributes to age-related deficits in cognitive functions such as memory. WM integrity can be measured in vivo using diffusion tensor imaging (DTI). DTI assesses MR changes due to the movement of water molecules, which are more parallel in intact […]
Episodic memory shows substantial decline as a function of aging, and fMRI studies have linked age effects on episodic memory to changes in prefrontal cortex (PFC) and medial temporal lobe (MTL) activity (for a review, see Daselaar & Cabeza, in press). Some age-related PFC and MTL changes could be compensatory (see Compensatory Brain Activity in […]
Despite substantial age-related deficits in most cognitive abilities, emotional processing is well preserved in healthy aging, possibly due to a greater emphasis on emotion regulation. According to socioemotional selective theory (SST), aging is associated with motivational differences in allocating attention to emotional information that lead to an increase in the ratio of processing positive vs. […]
Dew and Cabeza (2011) review behavioral and neuroimaging evidence showing that, under certain circumstances, there may be an important and influential relationship between conscious and nonconscious forms of memory. Here, we offer a model predicting that the brain regions associated with explicit or implicit memory are not differentiated based on consciousness, but rather vary along […]