Person:
Stanley, Garrett B.

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Now showing 1 - 2 of 2
  • Item
    Timing is everything: Tales from neural circuits and behavior
    ( 2020-11-09) Stanley, Garrett B.
    Our sensory pathways extract information from the complex world within which we live, and help us to perceive relevant inputs, make decisions, and take action. Our laboratory has extensively investigated representations and transformations of sensory inputs in both vision and touch. We specifically focus on the thalamocortical circuitry that serves as an inflection point of complexity between the sensory periphery and the brain structures that underlie perception. One theme that emerges across this body of work is that of timing: signals that are relevant for extracting useful information from the outside world are gated through the regulation of the precise timing of spiking in this network that ultimately dictate how we detect and discriminate features of the sensory world. I will discuss this perspective across a range of past experimental and computational studies in vision and touch, as well as more recent unpublished work that utilizes a combination of experimental approaches to perturb and measure these phenomena. Finally, I will discuss very recent work regarding timing on longer timescales, specifically concerning the relative role of various brain structures during learning.
  • Item
    Reading and Writing the Neural Code
    (Georgia Institute of Technology, 2011-01-18) Stanley, Garrett B.
    The external world is represented in the brain as spatiotemporal patterns of electrical activity. Sensory signals, such as light, sound, and touch, are transduced at the periphery and subsequently transformed by various stages of neural circuitry, resulting in increasingly abstract representations through the sensory pathways of the brain. It is these representations that ultimately give rise to sensory perception. Deciphering the messages conveyed in the representations is often referred to as "reading the neural code." True understanding of the neural code requires knowledge of not only the representation of the external world at one particular stage of the neural pathway, but ultimately how sensory information is communicated from the periphery to successive downstream brain structures. Our laboratory has focused on various challenges posed by this problem, some of which I will discuss. In contrast, prosthetic devices designed to augment or replace sensory function rely on the principle of artificially activating neural circuits to induce a desired perception, which we might refer to as "writing the neural code." This requires not only significant challenges in biomaterials and interfaces, but also in knowing precisely what to tell the brain to do. Our laboratory has begun some preliminary work in this direction that I will discuss. Taken together, an understanding of these complexities and others is critical for understanding how information about the outside world is acquired and communicated to downstream brain structures, in relating spatiotemporal patterns of neural activity to sensory perception, and for the development of engineered devices for replacing or augmenting sensory function lost to trauma or disease.