Yoshinao Kajikawa, Ph.D.

Yoshinao Kajikawa, Ph.D.

Research Scientist
Center for Biomedical Imaging and Neuromodulation

Primate auditory systems in the temporal lobe consist of more than a dozen cortical areas. Based on parallel and serial anatomical connections, they are organized into at least three hierarchical regions: core – belt – parabelt. Dr. Kajikawa’s lab addresses the anatomical and functional properties of sensory cortices in the primate temporal lobe, with a unique focus on the parabelt region. He uses multi-channel micro-electrodes and various data processing/analyses in combination with multi-modal sensory behavioral paradigms.

In the auditory system, a model of the functional architecture is under-developed compared to the visual systems, in which functional specializations of cortical areas are well characterized. Elucidating the properties of auditory areas/regions will help us understand how we process and perceive sounds. Of the three regions, the parabelt is least explored, leaving a gap in our understanding of how the auditory system works. Dr. Kajikawa’s investigations will contribute to understanding the mechanism of hearing.

Select Publications

  • Kajikawa Y, de La ML, Blumell S, Hackett TA (2005) A comparison of neuron response properties in areas A1 and CM of the marmoset monkey auditory cortex: tones and broadband noise. JNeurophysiol 93:22-34.
  • Kajikawa Y, Schroeder CE (2011) How local is the local field potential? Neuron 72:847-858.
  • Kajikawa Y, Frey S, Ross D, Falchier A, Hackett TA, Schroeder CE (2015) Auditory properties in the parabelt regions of the superior temporal gyrus in the awake macaque monkey: an initial survey. J Neurosci 35:4140-4150.
  • Kajikawa Y, Schroeder CE (2015) Generation of field potentials and modulation of their dynamics through volume integration of cortical activity. J Neurophysiol 113:339-351.
  • Morillon B, Hackett TA, Kajikawa Y, Schroeder CE (2015) Predictive motor control of sensory dynamics in auditory active sensing. Curr Opin Neurobiol 31:230-238.