Louis J. Toth, PhD

Clinical Associate Professor, Anatomy & Neurobiology

Louis Toth
72 E. Concord St Instructional (L)


My interest is in studying how the brain codes and computes information between a sensory input
and a behavioral output. These studies incorporate three main techniques: 1) recording from
single or small populations of neurons in anesthetized animals responding to visual stimuli, 2)
imaging of neuronal activity using intrinsic optical signals, voltage-sensitive dyes, and fMRI
techniques, and 3) recording and imaging from awake monkeys trained to perform cognitive

Other Positions

  • Graduate Faculty (Primary Mentor of Grad Students), Boston University Chobanian & Avedisian School of Medicine, Graduate Medical Sciences


  • Massachusetts Institute of Technology, PhD
  • Massachusetts Institute of Technology, SB

Classes Taught

  • an718
  • an726
  • an810
  • an811
  • GMSAN722
  • MEDMS148


  • Published on 1/5/2005

    Van Hooser SD, Heimel JA, Chung S, Nelson SB, Toth LJ. Orientation selectivity without orientation maps in visual cortex of a highly visual mammal. J Neurosci. 2005 Jan 5; 25(1):19-28. PMID: 15634763.

    Read at: PubMed
  • Published on 3/1/2004

    Kim DS, Ronen I, Olman C, Kim SG, Ugurbil K, Toth LJ. Spatial relationship between neuronal activity and BOLD functional MRI. Neuroimage. 2004 Mar; 21(3):876-85. PMID: 15006654.

    Read at: PubMed
  • Published on 6/1/2003

    Williams ZM, Elfar JC, Eskandar EN, Toth LJ, Assad JA. Parietal activity and the perceived direction of ambiguous apparent motion. Nat Neurosci. 2003 Jun; 6(6):616-23. PMID: 12730699.

    Read at: PubMed
  • Published on 1/10/2002

    Toth LJ, Assad JA. Dynamic coding of behaviourally relevant stimuli in parietal cortex. Nature. 2002 Jan 10; 415(6868):165-8. PMID: 11805833.

    Read at: PubMed
  • Published on 4/1/1998

    Somers DC, Todorov EV, Siapas AG, Toth LJ, Kim DS, Sur M. A local circuit approach to understanding integration of long-range inputs in primary visual cortex. Cereb Cortex. 1998 Apr-May; 8(3):204-17. PMID: 9617915.

    Read at: PubMed
  • Published on 12/1/1997

    Toth LJ, Kim DS, Rao SC, Sur M. Integration of local inputs in visual cortex. Cereb Cortex. 1997 Dec; 7(8):703-10. PMID: 9408034.

    Read at: PubMed
  • Published on 10/27/1997

    Rao SC, Toth LJ, Sur M. Optically imaged maps of orientation preference in primary visual cortex of cats and ferrets. J Comp Neurol. 1997 Oct 27; 387(3):358-70. PMID: 9335420.

    Read at: PubMed
  • Published on 9/3/1996

    Toth LJ, Rao SC, Kim DS, Somers D, Sur M. Subthreshold facilitation and suppression in primary visual cortex revealed by intrinsic signal imaging. Proc Natl Acad Sci U S A. 1996 Sep 3; 93(18):9869-74. PMID: 8790423.

    Read at: PubMed
  • Published on 7/1/1992

    Kwon YH, Nelson SB, Toth LJ, Sur M. Effect of stimulus contrast and size on NMDA receptor activity in cat lateral geniculate nucleus. J Neurophysiol. 1992 Jul; 68(1):182-96. PMID: 1355526.

    Read at: PubMed

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