Publications

Journal Articles:

Yoshida, K, Iwamoto, Y., Chimoto, S., and Shimazu, H.
Saccade-related inhibitory input to pontine omnipause neurons: an intracellular study in alert cats. J. Neurophysiol. 1999 (in press)

Perlmutter, S. I., Iwamoto, Y., Baker, J. F. and Peterson, B. W.
Spatial alignment of rotational and static tilt responses of vestibulospinal neurons in the cat. J. Neurophysiol. 1999 (in press)

Chimoto, S., Iwamoto, Y., and Yoshida, K.
Projections and firing properties of down eye movement neurons in the interstitial nucleus of Cajal in the cat. J. Neurophysiol. 81, 1199-1211, 1999

Sasaki, S. and Iwamoto, Y.
Axonal trajectories of the nucleus reticularis gigantocellularis neurons in the C2-C3 segments in cats. Neurosci. Lett. 264: 137-140, 1999.

Perlmutter, S. I., Iwamoto, Y., Barke, L.F., Baker, J. F. and Peterson, B. W.
Relationship between axon morphology in C1 spinal cord and spatial properties of medial vestibulospinal tract neurons in the cat. J. Neurophysiol. 79: 285-303, 1998

Perlmutter, S. I., Iwamoto, Y., Baker, J. F. and Peterson, B. W.
Interdependence of spatial properties and projection patterns of medial vestibulospinal tract neurons in the cat. J. Neurophysiol. 79: 270-284, 1998

Phillips, J. O., Fuchs, A. F., Ling L., Iwamoto, Y. and Votaw S.
Gain adaptation of eye and head movement components of simian gaze shifts. J. Neurophysiol. 78: 2817-2821, 1997

Iwamoto, Y., Perlmutter, S. I., Baker, J. F., Peterson, B. W.
Spatial coordination by descending vestibular signals 2. Response properties of medial and lateral vestibulospinal tract neurons in alert and decerebrate cats. Exp. Brain Res. 108: 85-100, 1996

Chimoto S., Iwamoto Y., Shimazu H. and Yoshida K.
Monosynaptic activation of medium-lead burst neurons from the superior colliculus in the alert cat. J. Neurophysiol. 75: 2658-2661,1996

Chimoto S., Iwamoto Y., Shimazu H. and Yoshida K.
Functional connectivity of the superior colliculus with saccade-related brain stem neurons in the cat. In: Extrageniculostriate mechanisms underlying visually-guided orientation behavior. Progress in Brain Research 112: 157-165, 1996

Chimoto, S., Iwamoto, Y., Yoshida K.
Projections of vertical eye movement-related neurons in the interstitial nucleus of Cajal to the vestibular nucleus in the cat. Neuroscience Research. 15, 293-298, 1992

Peterson, B. W., Baker, J. F., Perlmutter, S. I., Iwamoto, Y.
Neuronal substrates of spatial transformations in vestibuloocular and vestibulocollic reflexes. Annals of the New York Academy of Sciences vol. 656, 485-499, 1992

Iwamoto, Y., Kitama, T., Yoshida, K.
Role of premotor vestibular nucleus neurons in vertical gaze. Acta Oto-laryngologica Suppl 481:187-190, 1991

Iwamoto, Y.
Disynaptic tectal and pyramidal excitation of hindlimb motoneurons mediated by pontine reticulospinal neurons in the cat. Exp. Brain Res. 79: 175-186,1990

Iwamoto, Y., Kitama, T., Yoshida, K.
Vertical eye movement-related secondary vestibular neurons ascending in medial longitudinal fasciculus in cat. I. Firing properties and projection pathways. J. Neurophysiol. 63: 902-917,1990.

Iwamoto, Y., Kitama, T., Yoshida, K.
Vertical eye movement-related secondary vestibular neurons ascending in medial longitudinal fasciculus in cat. II. Direct connections with extraocular motoneurons. J.Neurophysiol. 63: 918-935,1990.

Iwamoto, Y., Sasaki, S., Suzuki, I.
Input-output organization of reticulospinal neurones, with special reference to connexions with dorsal neck motoneurones in the cat. Exp. Brain Res. 80: 260-276,1990.

Iwamoto, Y., Sasaki, S.
Monosynaptic excitatory connexions of reticulospinal neurones in the nucleus reticularis pontis caudalis with dorsal neck motoneurones in the cat. Exp. Brain Res. 80: 277-289,1990.

Iwamoto, Y., Suzuki, I., Sasaki, S.
Descending cortical and tectal control of dorsal neck motoneurons via reticulospinal neurons in the cat. Progress in Brain Research. 76:97-108, 1988.

Reviews:

Iwamoto, Y.
Brainstem mechanisms of vertical eye movements. Neuro-ophthalomology Japan. Vol.12, No. 2, 149-154, 1995. (in Japanese)

Peterson, B. W., Baker, J. F., Iwamoto, Y., Perlmutter, S. I., Quinn, K. J.
Neuronal substrates of vestibular reflex control of eye and head movements. In: Vestibular and brain stem control of eye, head and body movements. Eds. H. Shimazu and Y. Shinoda, Japan Scientific Societies Press/Karger, 53-68, 1992.

Iwamoto, Y., Kitama, T., Yoshida, K.
Eye movement related activity in the vestibulo-ocular and vestibulo-collic pathways in the cat. In: The head-neck sensory-motor system. Eds. A. Berthoz, W. Graf, and P.P. Vidal, Oxford Univ. Press, 273-278, 1992.

Abstracts

INTERNATIONAL MEETINGS:

Iwamoto, Y.
Saccadic overshoot following fastigial nucleus inactivation depends on retinal error in monkey. Soc. Neurosci. Abstr. Vol. 24, Part , p. , 1999.

Iwamoto, Y.
Nature of saccade dysmetria after muscimol injection in the primate fastigial nucleus is consistent with the IBN hypothesis. The 4th International Symposium on the Head/Neck System. 1999.

Iwamoto, Y.
Effects of inactivation of the fastigial oculomotor region on saccade accuracy in the monkey. Neural Control of Movement Meeting Abstracts, vol.4, O-6, 1999.

Iwamoto, Y., Perlmutter, S. I., Baker, J.F., Peterson, B.W.
Rotational and static tilt responses of vestibulospinal neurons in the cat. NCM Satellite Symposium, Vestibular Influences on Spatial Orientation, E-1, 1999.

Chimoto, S., Iwamoto, Y., and Yoshida, K.
Vestibular and eye movement signals in the vestibular nucleus and the interstitial nucleus of cajal. NCM Satellite Symposium, Vestibular Influences on Spatial Orientation, D-3, 1999.

Nakamagoe, K., Iwamoto, Y., and Yoshida, K.
Chemical inactivation of cell groups of paramedian tracts impairs gaze holding in the cat. Soc. Neurosci. Abstr. Vol. 24, Part 2, p.1499, 1998

Iwamoto, Y., Chimoto, S., Yoshida, K. and Shimazu, H.
Omnidirectional pause neurons receive an eye velocity signal during saccades in the alert cat. Soc. Neurosci. Abstr. Vol. 23, Part 1, p.7, 1997.

Nakamagoe, K., Iwamoto, Y., Yoshida, K. and Terui, N.
Neurons in the dorsomedial pons that discharge in relation to vertical eye movements in the cat. Soc. Neurosci. Abstr. Vol. 23, Part 2, p.2367, 1997

Yoshida, K., Iwamoto, Y., Chimoto, S., and Shimazu, H.
Synaptic inputs from the superior colliculus to saccadic burst generator in the cat. COE International Symposium (NIPS), Brainstem control of sensorimotor systems: Behavioral Aspects, p. 42-43, 1997.

Ling L., Phillips, J. O., Iwamoto, Y., Newlands, S. D., Fuchs, A. F.
Response of saccade related neurons in the primate brainstem during head-free gaze shifts to double target steps. Soc. Neurosci. Abstr. Vol. 22, Part 1, p.666, 1996.

Iwamoto, Y., Chimoto, S., Nambu, E., and Yoshida, K.
Synaptic actions of vertical eye position-related interstitiovestibular neurons in the alert cat. Soc. Neurosci. Abstr. Vol. 21, Part 3, p.1916, 1995.

Chimoto, S., Iwamoto, Y., Shimazu, H., and Yoshida, K.
Effects of superior colliculus stimulation on saccade-related brainstem neurons in the cat. Satellite Symposium for 4th IBRO World Congress of Neuroscience, Extrageniculostriate mechanisms underlying visually-guided orientation behavior, S-10, 1995.

Chimoto, S., Iwamoto, Y.,Nambu, E., and Yoshida, K.
Neural pathways mediating vertical eye position signals Japan-UK Physiological Societies Okazaki symposium. Jpn. J. Physiol. 45, Suppl. 2, S59, 1995.

Chimoto, S., Iwamoto, Y.,Nambu, E., and Yoshida, K.
Afferent inputs from the medial midbrain nuclei to the vestibular nucleus in the cat. Japan-UK Physiological Societies Nagoya symposium. Jpn. J. Physiol. 45, Suppl. 2, S329, 1995.

Iwamoto, Y., Chimoto, S., Nambu, E., and Yoshida, K.
Interaction between vertical eye position-related neurons in and around the interstitial nucleus of Cajal on both sides. Soc. Neurosci. Abstr. Vol. 20, Part 2, p.1398, 1994.

Iwamoto, Y., Chimoto, S., Nambu, E., and Yoshida, K.
Efferent neurons in the interstitial nucleus of Cajal mediating vertical eye position signals. Soc. Neurosci. Abstr. Vol. 19, Part 2, p.1593, 1993.

Iwamoto, Y., Chimoto, S., and Yoshida, K.
Vertical eye movement-related neurons in the interstitial nucleus of Cajal project to the vestibular nucleus. Soc. Neurosci. Abstr. Vol. 18, Part 1, p. 27, 1992.

Perlmutter, S. I., Barke, L. D., Iwamoto, Y., Powell, K. D., Baker, J. F., Peterson, B. W.
Relation between C1 terminal arbors and spatial properties of medial vestibulospinal treact neurons (MVSNs). Soc. Neurosci. Abstr. Vol. 17, Part 1, p. 316, 1991.

Perlmutter, S. I., Iwamoto, Y., Baker, J. F., Peterson, B. W.
Spatial response properties and projection patterns of secondary medial vestibulospinal tract (MVST) neurons. Soc. Neurosci. Abstr. Vol. 16, Part 2, p. 968, 1990.

Yoshida, K., Kitama, T. and Iwamoto, Y.
Functional organization of secondary vestibular neurons in the vertical vestibulo-ocular reflex arcs of the cat. Proc. IUPS, XVII: 534, 1989.

DOMESTIC MEETINGS:

Iwamoto, Y.
Muscimol injection in the primate fastigial nucleus: effects on the metrics of ipsiversive saccades. Jpn. J. Physiol. 49 (Suppl), S , 1999.

Yoshida, K., Iwamoto, Y., Chimoto, S., and Shimazu, H.
Inhibitory input to pontine omnipause neurons and saccade gating. Jpn. J. Physiol. 48 (Suppl), S160, 1998.

Nakamagoe, K., Iwamoto, Y., and Yoshida, K
Firing behavior and inactivation of eye movement-related cells in the pontine medial longitudinal fasciculus (MLF) in the cat. Neurosci. Res. Suppl. 22, S168, 1998.

Chimoto, S., Yano, T., Iwamoto, Y. and Yoshida, K.
Eye movement-related vestibular neurons that receive input from the contralateral posterior canal. Neurosci. Res. Suppl. 21, S188, 1997.

Chimoto, S., Iwamoto, Y., Yoshida, K., and Shimazu, H.
Brainstem omnipause neurons receive a vectorial eye velocity signal during saccades in the alert cat. Jpn. J. Physiol. 47 (Suppl 2), S177, 1997.

Yano, T., Chimoto, S., Iwamoto, Y., and Yoshida, K.
Commissural connections of vestibular neurons carrying vertical eye position signals in the cat. Jpn. J. Physiol. 47 (Suppl 2), S174, 1997.

Nakamagoe, K., Iwamoto, Y., and Yoshida, K.
Vertical eye movement related neurons in the median pontine tegmentum of the cat. Jpn. J. Physiol. 47 (Suppl 2), S174, 1997.

Yoshida, K., Chimoto, S., Iwamoto, Y. and Shimazu, H.
Synaptic events in omnipause neurons during saccades in connection with the superior colliculus in alert cats. Neurosci. Res. Suppl. 20, S 171, 1996.

Chimoto, S., Iwamoto, Y., Nambu, E. and Yoshida, K.
Input-output organization of eye movement-related interstitiovestibular neurons. Jpn. J. Physiol. 1995.

Chimoto, S., Iwamoto, Y., Nambu, E. and Yoshida, K.
Mesencephalic burst neurons related to vertical saccades project to the vestibular nucleus. Neurosci. Res. Suppl. 19, S 173, 1994.

Iwamoto, Y., Perlmutter, S. I., Baker, J. F. and Peterson, B. W.
Semicircular canal input and axonal trajectory of secondary medial vestibulospinal tract neurons in the cat. Jpn. J. Physiol. 44: Suppl. 1, S224, 1994.

Chimoto, S., Iwamoto, Y. Nambu, E. and Yoshida, K.
Commissural and vestibular projection of vertical eye movement-related neurons in and around the interstitial nucleus of Cajal. Neurosci. Res., Suppl. 18:S158, 1993.

Chimoto, S., Iwamoto, Y. Nambu, E. and Yoshida, K.
The role of the vestibular nucleus and the interstitial nucleus of Cajal in the control of vertical eye position in the cat. Jpn. J. Physiol. 43: Suppl. 2, S240, 1993.

Chimoto, S., Iwamoto, Y. and Yoshida, K.
Functional connections between interstitial nucleus of Cajal and vestibular nucleus: Relation to vertical eye movements. Neurosci. Res., Suppl. 17:S217, 1992.

Iwamoto, Y., Kitama, T., Shimazu, H. and Yoshida, K.
Visual and vestibular inputs to burster-driving neurons in the cat. Neurosci. Res. Suppl. 9: S93, 1989.

Iwamoto, Y., Kitama, T. and Yoshida, K.
Direct projection of vertical eye-position-related vestibular nucleus neurons to oculomotor and trochlear motoneurons in the cat. Neurosci. Res. Suppl. 7: S91, 1988.