I know some of you are Piercians, and some of you are interested in Neuroscience. So, without comment I give you this abstract of a recent paper:

Past experience provides a rich source of predictive information about the world that could be used to guide and optimize ongoing perception. However, the neural mechanisms that integrate information coded in long-term memory (LTM) with ongoing perceptual processing remain unknown. Here, we explore how the contents of LTM optimize perception by modulating anticipatory brain states. By using a paradigm that integrates LTM and attentional orienting, we first demonstrate that the contents of LTM sharpen perceptual sensitivity for targets presented at memory-predicted spatial locations. Next, we examine oscillations in EEG to show that memory-guided attention is associated with spatially specific desynchronization of alpha-band activity over visual cortex. Additionally, we use functional MRI to confirm that target-predictive spatial information stored in LTM triggers spatiotopic modulation of preparatory activity in extrastriate visual cortex. Finally, functional MRI results also implicate an integrated cortical network, including the hippocampus and a dorsal frontoparietal circuit, as a likely candidate for organizing preparatory states in visual cortex according to the contents of LTM.

It is an Open Access paper so you can read it here.



  1. #1 David Boulton
    February 8, 2012

    I enjoy and share your blog Greg. Question: do you know of any work that connects ‘LTM and attentional orienting’ with work on attention span cycling in learning (http://www.learningstewards.org/learning/cycle-of-engagement/)? Thanks and all the best, David

  2. #3 Greg Laden
    February 8, 2012

    David, not off hand. gc:I fewar the wikipedia version of CSP!