How do we plan movements of our eyes, arms or feet towards targets of interest? How do the processes of target selection and response selection interact? What is the substrate for eye-hand coordination?
Spatial Signals
How is spatial information encoded, stored and transformed in the brain?
Decision Making
How do neurons make stimulus discriminations?
Task Representations
We can switch rapidly between different tasks, though a task such as task-switching carries a price. Do monkeys show comparable behavior? How are tasks represented, and how is task switching implemented?
Vestibular System
The vestibulo-ocular reflex (VOR) is an excellent model system for studying spatial representations and sensory to motor transformations.
Monkey fMRI
Functional MRI using monkey subjects
Response Selection
Abstracts
- Equal and opposite eye and hand gain fields for reaching in PRR.
Chang SWC, Papadimitriou C, and Snyder LH
Society for Neuroscience (Chicago, IL), 2009
- A widespread stimulus-driven reduction in cortical variability.
Churchland MM, Yu BM, Cunningham JP, Sugrue LP, Cohen MR, Corrado GS, Newsome WT, Clark AM, Hosseini P, Scott BB, Bradley DC, Smith MA, Kohn A, Movshon JA, Armstrong KM, Moore T, Chang SW, Snyder LH, Ryu, SI, Santhanam G, Sahani M, and Shenoy KV.
Dynamical Neuroscience XVI: Neuronal Variability and Its Functional Significance at the Society for Neuroscience (Washington, DC), 2008
- Gain fields for the distance between the occular fixation point and the arm.
Chang SWC and Snyder LH
Advances in Computational Motor Control VII at the Society for Neuroscience (Washington, DC), 2008
- Reversible inactivation reveals that LIPv subserves general attention while LIPd subserves saccadic intention.
Liu Y, Yttri EA and Snyder LH
Society for Neuroscience (Washington, DC), 2008
- The distance between the (initial) eye and arm position is coded in PPC using a gain field.
Chang SWC and Snyder LH
SAND 4 @ University of Pittsburgh (Pittsburgh, PA), 2008
Papers
Limb-specific representation for reaching in the posterior parietal cortex
Chang SWC, Dickinson AR, Snyder LH
J Neurosci, 28, 6128-6140 (2008)
- Preparatory
delay activity in the monkey parietal reach region predicts reach reaction
times
Snyder LH, Dickinson AR, and Calton JL
J Neurosci 26, 10091-9 (2006)
- Comparison
for effector-specific signals in frontal and parietal cortices
Lawrence, BM and Snyder LH
J Neurophysiol. Sep;96(3):1393-400 (2006)
- Non-spatial
saccade-specific activation in area LIP of monkey parietal cortex.
Dickinson AR, Calton, JL and Snyder LH
Journal of Neurophysiology 90, 2460-2464 (2003)
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Non-spatial, motor-specific activation in posterior parietal cortex
Calton JL, Dickinson AR, and Snyder LH
Nature Neuroscience 5, 580-588 (2002)
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Eye-hand coordination: saccades are faster when accompanied by a
coordinated arm movement
Snyder LH, Calton JL, Dickinson AR, and Lawrence BM
Journal of Neurophysiology 87, 2279-2286 (2002)
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Modeling coordinate transforms
Pouget A and Snyder LH
Encyclopedia for Cognitive Science
L. Nadel (Ed) Nature Publishing Group, London (2002)
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Coordinate transformations for eye and arm movements in the brain
Snyder LH
Current Opinion in Neurobiology 10, 747-754 (2000)
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Computational approaches to sensorimotor transformations
Pouget A and Snyder LH
Nature Neuroscience 3:supp,1192-1198 (2000)
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Intention-related activity in the posterior parietal cortex: a review
Snyder LH, Batista AP and Andersen RA
Vision Research 40, 1433-1441(2000)
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Saccade-related activity in the parietal reach region
Snyder LH, Batista AP and Andersen RA
Journal of Neurophysiology 83, 1099-1102(2000)
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Reach Plans in Eye-Centered Coordinates
Batista AP, Buneo CA, Snyder LH and Andersen RA
Science 285, 257-260(1999)
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Posterior parietal areas specialized for eye movements (LIP) and reach
(PRR) using a common coordinate frame
Andersen RA, Snyder LH, Batista AP, Buneo CA and Cohen YE
Novartis Found Symp. 218, 109-122; 122-128; 171-175. Review. (1998)
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Multimodal Representation of Space in the Posterior Parietal Cortex and
its Use in Planning Movements
Andersen RA, Snyder LH, Bradley DC and Xing J
Annual Review of Neuroscience 20, 303-330 (1997)
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Change in Motor Plan, Without a Change in the Spatial Locus of Attention,
Modulates Activity in Posterior Parietal Cortex
Snyder LH, Batista AP and Andersen RA
Journal of Neurophysiology 79, 2814-2819 (1998)
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Coding of intention in the posterior parietal cortex
Snyder LH, Batista AP and Andersen RA
Nature 386, 167-170 (1997)
- Andersen RA, Snyder LH, Li CS, Stricanne B.
Coordinate transformations in the representation of spatial information.
Curr Opin Neurobiol.171-6 (1993)
Spatial Signals
Abstracts
Papers
-
An anti-Hick's effect in monkey and human saccade reaction times.
Lawrence BM, St.Johon A, Abrams, RA, Snyder LH
Journal of Vision , 8(3):26,1-7 (2008)
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Subthreshold
Microstimulation in the Frontal Eye Fields Updates Spatial Memories
White RL, Snyder LH
Exp Br Res 181:477–492 (2007)
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Spatial
constancy and the brain: insights from neural networks.
White RL, Snyder LH
Philos Trans R Soc Lond B Biol Sci , 362:375-82 (2007)
- Delay-period activity in visual, visuomovement, and movement neurons in the frontal
eye field.
Lawrence BM, White RL, & Snyder LH
J Neurophysiol. 94, 1498-508 (2005)
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A Neural Network Model of Flexible Spatial Updating
White RL, Snyder LH
J Neurophysiol 91, 1608-1619 (2004)
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Effects of training on memory-guided saccade performance
Visscher K, Viets E & Snyder LH
Vision Research 43, 2061-2071 (2003)
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Spatial Memory Following Shifts of Gaze. I. saccades to Memorized World-Fixed and Gaze-Fixed Targets
Baker JT, Harper TM & Snyder LH
J Neurophysiol 89, 2564-2576 (2003)
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Accuracy of Saccades to Remembered Targets as a Function of Body Orientation in Space
Vogelstein JT, Snyder LH and Angelaki DE
J Neurophysiol 90, 521-524 (2003)
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Separate body-and-world-referenced representations of visual space in parietal cortex
Snyder LH, Grieve KL, Brotchie P and Andersen RA
Nature 394, 887-891 (1998)
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Head position signals used by parietal neurons to encode locations of visual stimuli
Brotchie PR, Andersen RA, Snyder LH and Goodman SJ
Nature375, 232-235 (1995)
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Coordinate transformations in the representation of spatial information
Andersen RA, Snyder LH, Li C and Stricanne B
Current Opinion in Neurobiology 3, 171-176 (1993)
Decision Making
Abstracts
- Prior probabilities and decision formation in LIP.
Rao, V., Snyder, L.H., DeAngelis, G.C.
University of Rochester Center for Visual Science Symposium Abstracts, 2008.
- Prior probabilities and decision formation in LIP.
Rao, V., Snyder, L.H., DeAngelis, G.C.
University of Rochester Center for Visual Science Symposium Abstracts, 2008.
- Expectation effects on decision processes in LIP.
Rao, V., Snyder, L.H., DeAngelis, G.C.
Society for Neurosciences Abstracts, 2007
Papers
- The road least taken
Rao, V., Snyder, L.H., DeAngelis, G.C.
Nature Neuroscience 6, 623-4 (2008)
Task Representations
Papers
- Neural correlates of executive control functions in the monkey
Stoet G & Snyder LH
Trends Cogn Sci. 13:228-34 (2009)
- Modification of response time variability in a decision-making task
Stoet G, Ruge H, & Snyder LH
Neuroreport, 27;19(13):1321-4 (2008)
- Task
switching in human and non-human primates: Understanding rule encoding
and control from behavior to single neurons
Stoet G & Snyder LH
In press. in S.A. Bunge and J.D. Wallis (Eds.). The Neuroscience of rule-guided behavior. Oxford University Press.
- Extensive
practice does not eliminate human switch costs
Stoet G & Snyder LH
Cognitive, Affective, & Behavioral Neuroscience 7(3): 192-197 (2007).
- Correlates
of stimulus-response congruence in posterior parietal cortex (PPC)
Stoet G & Snyder LH
Journal of Cognitive Neuroscience 19: 194-203 (2007).
- Effects
of the NMDA Antagonist Ketamine on Task-Switching Performance:Evidence
for Specific Impairments of Executive Control.
Stoet G & Snyder LH
Neuropsychopharmacology Aug;31 (8): 1675-81 (2006)
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Single neurons in posterior parietal cortex of monkeys encode cognitive set
Stoet G & Snyder LH
Neuron 42:1003-1012 (2004)
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Task preparation in macaque monkeys (Macaca mulatta)
Stoet G & Snyder LH
Animal Cognition 6:121-130 (2003)
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Executive control and task-switching in monkeys
Stoet G & Snyder LH
Neuropsychologia 41/10, 1357-1364 (2003)
Vestibular System
Abstracts
Papers
- The contributions of vestibular signals to the representations of space in the posterior parietal cortex
Andersen RA, Shenoy KV, Snyder LH, Bradley DC and Crowell JA
Ann N Y Acad Sci. 871, 282-292 (1999)
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This way up: illusions and internal models in the vestibular system
Snyder LH
Nature Neuroscience 2, 396-398 (1999) -
Behavior and Physiology of the Macaque Vestibulo-Ocular Reflex Response to
Sudden Off-Axis Rotation: Computing Eye Translation
Snyder, LH and King, WM
Brain Research Bulletin 40, 293-301(1996) - Brotchie PR, Andersen RA, Snyder LH, Goodman SJ.
Head position signals used by parietal neurons to encode locations of visual stimuli.
Nature. 375, 232-5 (1995) -
Effect of Viewing Distance and Location of the Axis of Head Rotation on
the
Monkeys Vestibuloocular Reflex. I. Eye Movement Responses.
Snyder LH and King WM
Journal of Neurophysiology 67, 861-874 (1992)
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Changes in Vestibulo-Ocular Reflex (VOR) Anticipate Changes in Vergence Angle
in Monkey
Snyder LH, Lawrence DM and King WM
Vision Research 32, 569-575 (1991)
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Vertical Vestibuloocular Reflex in Cat: Asymmetry and Adaption
Snyder LH and King WM
Journal of Neurophysiology 59, 279-298 (1988)
Monkey MRI
Abstracts
- Intrinsic
functional architecture in the anaesthetized monkey brain
Vincent et al.
Nature 447(7140):83-6 (2007) - Distribution
of Activity Across the Monkey Cerebral Cortical Surface, Thalamus and
Midbrain during Rapid, Visually Guided Saccades.
Baker JT, Patel GH, Corbetta M, Snyder LH.
Cereb Cortex 16, 447-59 (2006) - Movement
intention is better predicted than attention in the posterior parietal
cortex.
Quiroga RQ, Snyder LH, Batista AP, Cui H, Andersen RA
J Neuroscience. 26, 3615-3620 (2006) - Frame-up.
Focus on "eye-centered, head-centered, and complex coding of visual
and auditory targets in the intraparietal sulcus".
Snyder LH
J Neurophysiol. 94, 2259-60 (2005) - Don't go there.
Snyder LH & Lawrence BM
Neuron. 43, 297-9 (ƒ2004) -
Moving forward by looking away
Snyder LH
Nature 408, 921-923 (2000) -
The Use of a Thermoplastic Cap to Protect Against Self-induced Trauma in a Nonhuman Primate
Musch KL and Snyder LH
Contemporary Topics in Laboratory Animal Science 37, 75-76 (1998)
Papers
Others