Affiliations: | 1995-2005 | Psychology | Princeton University, Princeton, NJ |
| 2005-2016 | Center for Neuroscience | University of California, Davis, Davis, CA |
| 2011-2016 | Psychology | University of California, Davis, Davis, CA |
| 2017- | Biomedical Physiology and Kinesiology | Simon Fraser University, Burnaby, British Columbia, Canada |
Area:
Neuroplasticity, Sensorimotor integration, Evolution
Website:
https://www.sfu.ca/bpk/people/faculty_directory/dcooke.html
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High-probability grants
According to our matching algorithm, Dylan F. Cooke is the likely recipient of the following grants.
Years |
Recipients |
Code |
Title / Keywords |
Matching score |
2001 — 2003 |
Cooke, Dylan Francis |
F31Activity Code Description: To provide predoctoral individuals with supervised research training in specified health and health-related areas leading toward the research degree (e.g., Ph.D.). |
Tool Use and the Neural Representation of Arm Position
DESCRIPTION(adapted from applicant?s abstract): The aim of the proposed experiment is to test how the use of tools modifies the neuronal representation of arm position in monkey parietal area 5. The brain contains a representation of the body, and external objects such as tools and prosthetic limbs can be incorporated into this body Image. Many neurons in area 5 respond to the static position of the arm. How are the responses of these neurons modified by the experience of using a tool? First, a neurons sensitivity to arm position will be tested In the dark during a fixation task. Next, the monkey will perform a tool use task in the light requiring him to touch targets with the end of the tool. The tool will be configured to the left of the monkey?s arm. Alter this tool use experience, the neuron?s sensitivity to arm position will be re-tested and the two arm position tuning curves, observed before and after tool use, will be compared. We hypothesize that after the monkey uses the leftward-bent tool, the neuron may begin to encode the offset position of the tool. In this case, the neuron?s tuning curve for arm position should be offset to the right. Neurons will also be tested similarly with a rightward-bent tool. A result of this type would indicate that the tool had been incorporated into the neuronal representation of the body as an extension of the arm. An understanding of how the neuronal representation of the body Image changes with experience may in the future contribute to therapies for stroke patients with parietal damage and amputees with phantom pain.
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2008 — 2011 |
Cooke, Dylan Francis |
F32Activity Code Description: To provide postdoctoral research training to individuals to broaden their scientific background and extend their potential for research in specified health-related areas. |
Functional Architecture of Motor Cortex: Topography and Connections @ University of California Davis
[unreadable] DESCRIPTION (provided by applicant): The goal of this proposal is to improve our understanding of motor cortex organization. Motor cortex in mammals is organized in a rough somatotopic pattern, with the muscles of the hindlimb represented medially and the muscles of the forelimb and face represented progressively more laterally. Fine somatotopy is jumbled, however, and the reason for this is not clear. For example, within the forelimb representation, finger, hand, and arm are intermingled and appear multiple times. This contrasts with the fine somatotopy of primary somatosensory cortex. Recent studies in primates have suggested additional organizing principles that, together with large-scale somatotopy, may account more completely for motor topography. One alternative organizational feature in motor cortex is an apparent map of space to which the hand is driven by intracortical microstimulation (movement endpoint map). Regardless of initial hand position, stimulation of medial sites within the forelimb region drives the hand to locations near the feet, whereas stimulation at lateral sites drives the hand to locations near the head. A second alternative organizational feature is a patchwork of subregions, each representing a single complex, behaviorally relevant movement, such as feeding or flinching (ethological subregions map). I propose to test these alternatives in two non-primate species to determine whether either is a general organizing principle in mammals. The specific aims are to: 1. Determine the organization and connections of motor and sensorimotor areas in the raccoon (Procyon lotor) using combined connectional, architectonic, microstimulation, and sensory mapping data. (This aim has been completed in squirrels). 2. Determine the movement topography and specific connections of motor cortex in California ground squirrels (Spermophilus beecheyi) and raccoons. The pattern of movement types evoked in the M1 forelimb representation by stimulation will be analyzed for similarities or organizations seen in monkey motor cortex. Connections to specific sites will be related to microstimulation results. These data from specific stimulation sites will be used to reinforce or refute functional interpretations of complex stimulation-evoked movements. PUBLIC HEALTH RELEVANCE A basic understanding of brain organization is the first step toward developing new ways to diagnose and treat brain damage and disease. This proposal aims to improve the understanding to how the brain connects to and controls muscles. [unreadable] [unreadable] [unreadable]
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