Justin Ales, Ph.D.

photograph of Justin Ales wearing an electrode net on his headFor more information see my website:

http://www.stanford.edu/~jmales

Biosketch:

Justin Ales received his B.S. degree in Biomedical/Electrical Engineering from the University of Southern California.  In 2007 he completed his Ph.D. from the University of California, Berkeley under the supervision of Dr. Stanley A. Klein.   His dissertation research focused on combining visual evoked potentials and functional magnetic resonance imaging to map neural activity from V1 and V2 with millimeter and millisecond resolution.

My research aims are to develop advances for neuroimaging that combine both electroencephalographic (EEG) and functional magnetic resonance imaging (fMRI) and to leverage these techniques for the study of the computational mechanisms that visual cortex utilizes for information processing in response to variations in the environment caused both by changes in stimulus properties and by behavioral goals.

For further information please check my website.

Publications

  • Carney T, Ales JM, Klein SA, 2006. Advances in multifocal methods for imaging human brain activity, Proceedings of the SPIE, 6057, pp. 413-424
  • Dandekar S., Ales, JM, Carney T, Klein SA, 2007. Methods for quantifying intra-and inter-subject variability of evoked potential data applied to the multifocal visual evoked potential. Journal of Neuroscience Methods, 165 (2), pp. 270-286
  • Carney, T., Ales, J., Klein, S.A., 2008. Combining MRI and VEP imaging to isolate the temporal response of visual cortical areas. Proceedings of the SPIE. Volume 6806
  • Ales, JM, Norcia, A.M., 2009. Assessing direction-specific adaptation using the steady-state visual evoked potential: results from EEG source imaging. Journal of Vision 9 (7), pp. 1-13
  • Ales JM, Carney T, Klein SA. (2010) The folding fingerprint of visual cortex reveals the timing of human V1 and V2. Neuroimage. 49(3), pp. 2494-502
  • Lauritzen, TZ, Ales JM, Wade AR, (2010) The effects of visuospatial attention measured across visual cortex using source-imaged, steady-state EEG. Journal of Vision. 10 (14)
  • Ales JM, Yates JL, Norcia AM.  (2010)  V1 is not uniquely identified by polarity reversals of responses to upper and lower field stimuli. NeuroImage. 52, pp. 1401-1409.
  • Appelbaum LG, Ales JM, Cottereau, BR, Norcia AM. (2010)  Configural specificity of lateral occipital cortex. Neuropsychologia, 48, pp. 3323-3328.
  • Cottereau BR, McKee SP, Ales JM, Norcia AM  (2011) Disparity-tuned population responses from human visual cortex.  J. Neuroscience. 31 pp.954-965.
  • Cottereau BR, Ales JM, Norcia AM.  (2011)  Increasing the accuracy of EEG/MEG cortical reconstructions using functional area source correlation constraints.  Human Brain Mapping.
  • Tsai JJ, Norcia AM, Ales JM, Wade AR. (2011) Contrast gain control abnormalities in idiopathic generalized epilepsy.  Annals Neurol.
  • Fesi JD, Yannes MP, Brinckman DD, Norcia AM, Ales JM, Gilmore RO, (2011) Distinct cortical responses to 2D figures defined by motion contrast. Vision Research
  • Ales JM, Farzin F, Rossion B, Norcia AM. (2012). An objective method for measuring face detection thresholds using the sweep steady-state visual evoked response. Journal of Vision.
  • Palomares M, Ales JM, Wade AR, Cottereau BR, Norcia AM. (2012). Distinct effects of attention on the neural responses to form and motion processing: A SSVEP source-imaging study. Journal of VIsion.
  • Appelbaum LG, Ales JM, Norcia AM. (2012). The time course of segmentation and cue-selectivity in the human visual cortex. PLoS One.
  • Cottereau BR, McKee SP, Ales JM, Norcia AM. (2012). Disparity-specific spatial interactions: evidence from EEG source imaging. J Neuroscience.
  • Ales JM, Yates JL, Norcia AM. (2012). On determining the intracranial sources of visual evoked potentials from scalp topography: A reply to Kelly et al. Neuroimage.