Brain activation during maintenance of standing postures in humans

Y Ouchi, H Okada, E Yoshikawa, S Nobezawa… - Brain, 1999 - academic.oup.com
The regulatory mechanism of bipedal standing in humans remains to be elucidated. We
investigated neural substrates for maintaining standing postures in humans using PET with our …

Neural substrates of human facial expression of pleasant emotion induced by comic films: a PET study

M Iwase, Y Ouchi, H Okada, C Yokoyama, S Nobezawa… - Neuroimage, 2002 - Elsevier
Laughter or smile is one of the emotional expressions of pleasantness with characteristic
contraction of the facial muscles, of which the neural substrate remains to be explored. This …

Changes in dopamine availability in the nigrostriatal and mesocortical dopaminergic systems by gait in Parkinson's disease

…, H Okada, E Yoshikawa, M Futatsubashi, S Nobezawa… - Brain, 2001 - academic.oup.com
The basal ganglia play a role in controlling movement during gait. The aim of the present study
was to investigate changes in dopamine transporter (DAT) availability in the striatum and …

Ovarian cancer recurrence: role of whole-body positron emission tomography using 2-[fluorine-18]-fluoro-2-deoxy-D-glucose

T Torizuka, S Nobezawa, T Kanno… - European journal of …, 2002 - Springer
This study was designed to assess the value of whole-body positron emission tomography (PET)
using 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (FDG) for the diagnosis of recurrent …

Absolute changes in regional cerebral blood flow in association with upright posture in humans: an orthostatic PET study

…, M Futatsubashi, S Nobezawa - Journal of nuclear …, 2001 - Soc Nuclear Med
To determine whether hemodynamic parameters are changed by upright posture in healthy
middle-aged humans, absolute values of regional cerebral blood flow (rCBF) were …

Short dynamic FDG-PET imaging protocol for patients with lung cancer

T Torizuka, S Nobezawa, S Momiki… - European journal of …, 2000 - Springer
This positron emission tomography (PET) study was designed to compare 2-[fluorine-18]fluoro-2-deoxy-D-glucose
(FDG) kinetic parameters of tumours derived from imaging frames of 0…

Presynaptic and postsynaptic dopaminergic binding densities in the nigrostriatal and mesocortical systems in early Parkinson's disease: a double‐tracer positron …

…, M Futatsubashi, S Nobezawa… - Annals of Neurology …, 1999 - Wiley Online Library
To investigate changes in the relation between presynaptic and postsynaptic dopaminergic
functions in vivo in both nigrostriatal and mesocortical systems in Parkinson's disease (PD), …

Postural effects on brain hemodynamics in unilateral cerebral artery occlusive disease: a positron emission tomography study

Y Ouchi, S Nobezawa, E Yoshikawa… - Journal of Cerebral …, 2001 - journals.sagepub.com
To investigate effect of assuming of upright posture on brain hemodynamics in patients with
unilateral internal carotid or middle cerebral artery occlusion (MCAO), local tissue oxygen …

Neutral substrates for postural balance in humans

Y Ouchi, S Nobezawa, H Okada, E Yoshikawa… - International Congress …, 2002 - Elsevier
In order to investigate the neural substrates in the intact human brain, healthy volunteers
underwent positron emission tomography (PET) with [ 15 O]H 2 O while they were adopting …

Correlation between cerebral blood flow, substrate delivery, and metabolism in head injury: a combined microdialysis and triple oxygen positron emission tomography …

PJ Hutchinson, AK Gupta, TF Fryer… - Journal of Cerebral …, 2002 - journals.sagepub.com
Microdialysis continuously monitors the chemistry of a small focal volume of the cerebral
extracellular space. Conversely, positron emission tomography (PET) establishes metabolism …