Professor Ralf
Wessel's Publications


Hoseini MS, Pobst J, Wright NC, Clawson WP, Shew WL, Wessel R (2018) The turtle visual system mediates a complex spatiotemporal transformation of visual stimuli into cortical activity. J Comparative Physiology A 204 (2), 167181. 

Wright NC, Hoseini MS, Yasar TB, Wessel R (2017) The coupling of synaptic inputs to local cortical activity differs among pyramidal neurons and adapts following stimulus onset. J Neurophysiology 118: 33453359 

Hoseini MS, Wright NC, Pobst J, Clawson WP, Shew WL, Wessel R (2017) Induced cortical oscillations are coherent at the mesoscale of population activity, but not at the microscale of the membrane potential of neurons. J Neurophysiology 118(5): 25792591 

Wright NC, Wessel R (2017) Network activity influences the subthreshold and spiking visual responses of pyramidal neurons in a threelayer cortex. J Neurophysiology 118(4): 21422155 

Karimipanah Y, Ma Z, Wessel R (2017) Criticality predicts maximum irregularity in recurrent networks of excitatory nodes. PLoS ONE, 12(8): e0182501.(Matlab Code) 

Wright NC, Hoseini MS, Wessel R (2017) Adaptation modulates correlated subthreshold response variability in visual cortex. J Neurophysiology, 118: 12571269, 2017 

Clawson WP, Wright NC, Wessel R, Shew WL (2017) Adaptation towards scalefree dynamics improves cortical stimulus discrimination at the cost of reduced detection. PLoS Comput Biol 13(5): e1005574. 

Karimipanah Y, Ma Z, Kang Miller J, Yuste R, Wessel R (2017) Neocortical activity is stimulus and scaleinvariant. PLOS ONE, 12(5) : e0177396. (Supplementary Material) 

Yasar TB, Wright NC, Wessel R (2016) Inferring presynaptic excitatory population spike trains from membrane potential fluctuations. J Neuroscience Methods, 259: 1321. 

Hoseini MS, Wessel R (2016) Coherent and intermittent ensemble oscillations emerge from networks of irregular spiking neurons. J Neurophysiology 115: 457469. 

Crockett T, Wright N, Thornquist S, Ariel M, Wessel R (2015) Turtle Dorsal Cortex Pyramidal Neurons
Comprise Two Distinct Cell Types with Indistinguishable Visual Responses. PLoS ONE 10 (12): e0144012. doi:10.1371/journal.pone.0144012. 

Schlaepfer CH, Wessel R (2015) Excitable Membranes and Action Potentials in Paramecia: An Analysis of the Electrophysiology of Ciliates. The Journal of Undergraduate Neuroscience Education 14(1): A82A86. 

Shew WL, Clawson WP, Pobst J, Karimipanah Y, Wright NC, Wessel R (2015) Adaptation to sensory input tunes visual cortex to criticality. Nature Physics 11: 659663. (Supplementary Material) 

Brandt SF, Pelster A, Wessel R (2011) Noisedependent stability of the synchronized State in a coupled system of active rotators. World Journal of Condensed Matter Physics 1: 8896. 

Lai D, Brandt S, Luksch H, Wessel R (2011) Recurrent antitopographic inhibition mediates competitive stimulus selection in an attention network. J Neurophysiol 105: 793805. 

Saha D, Morton D, Ariel M, Wessel R (2011) Visual response properties of a cholinergic neuron in turtle nucleus isthmi. J Comp Physiol A 197: 153165. 

Caudill MS, Eggebrecht AT, Gruberg ER, Wessel R (2010) Electrophysiological properties of isthmic neurons in frogs revealed by in vitro and in vivo studies. J Comp Physiol A 196: 249262. 

Dellen BK, Wessel R, Clark JW, Wörgötter F (2010) Motion processing with widefield neurons in the retinotectorotundal pathway. J Computational Neurosci 28: 4764. 

Caudill MS, Brandt SF, Nussinov Z, Wessel R (2009) An intricate phase diagram of a prevalent visual circuit reveals universal dynamics, phase transitions and resonances. Phys Rev E 80: 051923. 

Shao J, Lai D, Meyer U, Luksch H, Wessel R (2009) Generating oscillatory bursts from a network of regular spiking neurons without inhibition. J Computational Neurosci 27: 591606. 

Dellen BK, Clark JW, Wessel R (2009) Contextual interaction in a generalized energy model of complex cells. Spatial Vision 22: 301324. 

Dellen BK, Wessel R (2009) Visual Motion Detection. In: Squire LR (ed.) Encyclopedia of Neuroscience. Oxford Academic Press, pp. 291295 (Review Article). 

Meyer U, Shao J, Chakrabarty S, Brandt SF, Luksch H, Wessel R (2008) Distributed delays stabilize neural feedback systems. Biol Cybernetics 99: 7987. 

B. K. Dellen, J. W. Clark, R. Wessel (2007) The brain's view of the natural world in motion: Computing structure from function using directional Fourier transforms. Int. J. Mod. Phys. B., 21: 24932504. 

Brandt SF, Pelster A, Wessel R (2007) Synchronization in a neuronal feedback loop through asymmetric temporal delays. Europhysics Letters, 79: 38001. 

Brandt SF, Wessel R (2007) Winnertakeall selection in a neural system with delayed feedback. Biol Cybernetics, 97: 221228. 

Khanbabaie R, Mahani AS, Wessel R (2007) Contextual interaction of GABAergic circuitry with dynamic synapses. J Neurophysiology , 97: 28022811. 

Mahani AS, Wessel R (2006) Iterative cooperation between parallel pathways for object and wholefield motion.. Biol Cybernetics, 95: 393400. 

Brandt SF, Pelster A, Wessel R (2006) Variational calculation of the limit cycle and its frequency in a twoneuron model with delay.. Phys Rev E 74: 036201. 

Brandt SF, Dellen BK, Wessel R (2006) Synchronization from disordered driving forces in arrays of coupled oscillators. Phys Rev Letters, 96: 034104. 

Mahani AS, Khanbabaie R, Luksch H, Wessel R (2006) Sparse spatial sampling for the computation of motion in multiple stages. Biol Cybernetics 94: 276287. 

Mahani AS, Wessel
R (2005) Motion contrast classification is a linearly nonseparable problem. Neural Computation 17: 17001705. 

Mahani AS, Carlsson
AE, Wessel R (2005) Motion repulsion arises from stimulus statistics
when analyzed with a clustering algorithm. Biol Cybernetics 92: 288291. 

Dellen BK, Clark JW,
Wessel R (2005) Computing relative motion with cortical complex cells. Visual Neuroscience 22: 225236. 

Dellen BK, Clark JW,
Wessel R (2004) Motioncontrast computation without directionally sensitive
motion sensors. Phys Rev E 70031907. (Selected for the Virtual Journal
of Biological Physics Research, October 2004.) 

Mahani AS, Carlsson
AE, Wessel R (2004) Mixing two sets of noisy measurements changes the
Ndependence of resolution to a fourthroot power law. J Physics A 37:
49134937. 

Nguyen QT, Wessel
R, Kleinfeld D (2004) Developmental regulation of active and passive
membrane properties in rat vibrissa motoneurones. J Physiol 556: 203219. 

Luksch H, Khanbabaie
R, Wessel R (2004) Synaptic dynamics mediate sensitivity to motion independent
of stimulus details. Nature Neuroscience 7: 380388. 

Luksch H, Karten HJ,
Kleinfeld D, Wessel R (2001) Chattering and differential signal processing
in identified motion sensitive neurons of parallel visual pathways in
chick tectum. J Neuroscience 21:64406446. 

Wessel R, Kristan
Jr WB, Kleinfeld D (1999) Dendritic Ca^{2+}activated K^{+} conductances regulate
electrical signal propagation in an invertebrate neuron. J Neuroscience
19:83198326. 

Wessel R, Kristan
Jr WB, Kleinfeld D (1999) Supralinear summation of synaptic inputs by
an invertebrate neuron: dendritic gain is mediated by an inward rectifier
K^{+} channel. J Neuroscience 19:58755888. 

Metzner W, Koch C,
Wessel R, Gabbiani F (1998) Feature extraction by burstlike spike patterns
in multiple sensory maps. J Neuroscience 18:22832300. 

Gabbiani F, Metzner
W, Wessel R, Koch C (1996) From stimulus encoding to feature extraction
in weakly electric fish. Nature 384:564  567. 

Wessel R, Koch C,
Gabbiani F (1996) Coding of timevarying electric field amplitude modulations
in wavetype electric fish. J Neurophysiology 75:22802293. 

Wessel R (1995) In
vitro study of phase resetting and phase locking in a time comparison
circuit in electric fish, Eigenmannia. Biophysical J 69:18801890. 

Wessel R, Ball RC
(1993) Clustercluster aggregation with random bond breaking. J Phys
A 26:L159L163. 

Wessel R, Ball RC
(1992) Fractal aggregates and gels in shear flow. Phys Rev A 46:30083011. 

Wessel R, Ball RC
(1992) Diffusionlimited aggregation at equilibrium. Phys Rev A 45:21772179. 

Wessel R, Ball RC
(1991) Statistical theory of irreversibly reacting systems. J Phys A
24:451459. 

Wessel R (1991) Resonant
tunneling of holes in the envelopefunction approximation. In: L.L. Chang
(ed), Resonant tunneling in semiconductors, Plenum Press, p. 95105. 

Wessel R, Vagner ID
(1990) Spinflip assisted resonant tunneling. Superlattices and Microstructures 8:443447. 

Wessel R, Altarelli
M (1989) Analytic solution of the effectivemass equation in strained
SiSiGe heterostructures applied to resonant tunneling. Phys Rev B40:1245712462. 

Wessel R, Altarelli
M (1989) Resonant tunneling of holes in doublebarrier heterostructures
in the envelopefunction approximation. Phys Rev B39:1280212807. 

Wessel R, Altarelli
M (1989) Quasistationaryenergylevel calculation for thin doublebarrier
GaAsAlAs heterostructures. Phys Rev B39:1024610250. 

Wessel R, Theiler
T, Keilmann F (1987) Pulsed highpower midinfrared gas lasers. IEEE
Journal of Quantum Electronics QE23: 385389. 