Research Assistant Professor of Psychology

Neuroscience

Office: 062 Wilson Hall
Phone: (615) 322-5247
Fax: (615) 343-8449
Email:

Degrees

Ph.D., Zurich University, Switzerland, 1996

Research Area

Qi�s major research interests are in the anatomical and functional organization of the somatosensory system in primates. Qi is particularly interested in (1) Comparative study of cytoarchitecture, enzyme reactivity and immunohistochemistry of subdivisions of somatosensory cortex and subcortical structure in humans, chimpanzees, and monkeys. (2) Reorganization of somatosensory system after peripheral and central nerve system lesions. (3) Characterizing the response properties of cortical neurons to tactile stimulation on the hand using acute or chronic recording techniques with arrays of multi-wire microelectrodes. The goal of this research is to understand how these neurons code stimulus events, how these populations of neurons respond to sensory loss, and how they mediate recovers from injury such as stroke, peripheral never or spinal cord injuries.

Representative Publications

Qi HX, Kaas JH. 2006. The organization of primary afferent projections to the gracile nucleus of the dorsal column system of primates. J Comp Neurol (in press).
Qi HX, Kaas JH. 2006. Reorganization of the sensorimotor system after injury, in Pain Gene, synapse and disease (in press).
Kaas JH, Qi HX, Iyengar S. 2006. Cortical network for representing the teeth and tongue in primates. Anat Rec A Discov Mol Cell Evol Biol 288(2):182-190.
Qi HX, Stewart Phillips W, Kaas JH. 2004. Connections of neurons in the lumbar ventral horn of spinal cord are altered after long-standing limb loss in a macaque monkey. Somatosens Mot Res 21(3-4):229-239.
Qi HX, Kaas JH. 2004. Myelin stains reveal an anatomical framework for the representation of the digits in somatosensory area 3b of macaque monkeys. J Comp Neurol 477(2):172-187.
Kaas JH, Qi HX. 2004. The reorganization of the motor system in primates after the loss of a limb. Restor Neurol Neurosci 22(3-5):145-152.
Coq JO, Qi H, Collins CE, Kaas JH. 2004. Anatomical and functional organization of somatosensory areas of the lateral fissure of the New World titi monkey (Callicebus moloch). J Comp Neurol 476(4):363-387.
Stepniewska I, Sakai ST, Qi HX, Kaas JH. 2003. Somatosensory input to the ventrolateral thalamic region in the macaque monkey: potential substrate for parkinsonian tremor. J Comp Neurol 455(3):378-395.
Rothemund Y, Qi HX, Collins CE, Kaas JH. 2002. The genitals and gluteal skin are represented lateral to the foot in anterior parietal somatosensory cortex of macaques. Somatosens Mot Res 19(4):302-315.
Qi HX, Lyon DC, Kaas JH. 2002. Cortical and thalamic connections of the parietal ventral somatosensory area in marmoset monkeys (Callithrix jacchus). J Comp Neurol 443(2):168-182.
Jain N, Qi HX, Kaas JH. 2001. Long-term chronic multichannel recordings from sensorimotor cortex and thalamus of primates. Prog Brain Res 130:64-72.
Jain N, Qi HX, Catania KC, Kaas JH. 2001. Anatomic correlates of the face and oral cavity representations in the somatosensory cortical area 3b of monkeys. J Comp Neurol 429(3):455-468.
Sakai ST, Stepniewska I, Qi HX, Kaas JH. 2000. Pallidal and cerebellar afferents to pre-supplementary motor area thalamocortical neurons in the owl monkey: a multiple labeling study. J Comp Neurol 417(2):164-180.
Qi HX, Stepniewska I, Kaas JH. 2000. Reorganization of primary motor cortex in adult macaque monkeys with long-standing amputations. J Neurophysiol 84(4):2133-2147.
Jain N, Florence SL, Qi HX, Kaas JH. 2000. Growth of new brainstem connections in adult monkeys with massive sensory loss. Proc Natl Acad Sci U S A 97(10):5546-5550.
Stepniewska I, Qi HX, Kaas JH. 1999. Do superior colliculus projection zones in the inferior pulvinar project to MT in primates? Eur J Neurosci 11(2):469-480.
Qi HX, Jain N, Preuss TM, Kass JH. 1999. Inverted pyramidal neurons in chimpanzee sensorimotor cortex are revealed by immunostaining with monoclonal antibody SMI-32. Somatosens Mot Res 16(1):49-56.
Preuss TM, Qi H, Kaas JH. 1999. Distinctive compartmental organization of human primary visual cortex. Proc Natl Acad Sci U S A 96(20):11601-11606.
Hepp-Reymond M, Kirkpatrick-Tanner M, Gabernet L, Qi HX, Weber B. 1999. Context-dependent force coding in motor and premotor cortical areas. Exp Brain Res 128(1-2):123-133.