Kazuhiro Hori

Learn More
When mixed-sex groups of rats in established colonies were given free access to 4% and then 8% ethanol solutions, relative ethanol consumption for individual subjects was consistent over the two solutions, with some subordinate males consuming much more ethanol than any of the dominant males. Overall, subordinate male consumption was significantly higher(More)
In order to determine the effects of ethanol on social/agonistic interactions of rats in mixed-sex groups, saline or 0.3, 0.6, or 1.2 g/kg injections of ethanol were given to one male in 3 M, 3 F groups just prior to placement of the animals in a colony situation. Scores of offensive behaviors by the treated males generally declined as a function of dose(More)
PURPOSE The aim of this study was to develop a sensor sheet for measuring tongue pressure during swallowing and to clarify its usefulness by comparing it with a conventional pressure sensor installed in the palatal plate. METHODS A tactile sensor system was used for the construction of the measuring system. Based on our preceding study, a T-shaped sensor(More)
OBJECTIVES The tongue plays an important role in swallowing by contacting the palate. The aim of the present study was to investigate the characteristics of tongue pressure production during swallowing in post-stroke patients using a newly developed sensor sheet. MATERIALS AND METHODS Ten post-stroke inpatients with hemiplegia and five healthy volunteers(More)
Male rats confronting strange male intruders into their home cages were divided into nonaggressive, low-to-intermediate aggressive, and highly aggressive groups. In tests with low (0.3 and 0.6 g/kg) doses of ethanol the nonaggressive rats did not become aggressive; low-intermediate animals showed a significant increase in frequency and duration of attack(More)
The purpose of this study was to investigate the influence of chin-down posture and bolus size on tongue pressure during swallowing. Eleven healthy volunteers (7 men, 4 women; age range = 26–59 years) participated in the experiments. Tongue pressure during dry and 5- and 15-ml water swallows in neutral and chin-down postures was measured using a sensor(More)
PURPOSE The prosthodontic treatment of dysphagic patients may preclude favorable treatment outcomes due to uncoordinated or discordant oral and pharyngeal functions. Since optimal treatment requires a full understanding of the mechanism of oropharyngeal swallowing, this study seeks to describe the normal temporal pattern of tongue-, jaw-, and(More)
BACKGROUND In the recent hyper-aged societies of developed countries, the market for soft diets for patients with dysphagia has been growing and numerous jelly-type foods have become available. However, interrelationships between the biomechanics of oral strategies and jelly texture remain unclear. The present study investigated the influence of the initial(More)
BACKGROUND Swallowing dysfunction (also known as dysphagia), which results in a deterioration of nutritional intake, slows rehabilitation and causes aspiration pneumonia, is very common following neurological impairments. Although videofluorographic (VF) examination is widely used for detecting aspiration, an objective and non-invasive method for assessing(More)
OBJECTIVES Behavioural performance of tablet swallowing was evaluated with different tablet conditions in terms of size, number and surface coating. METHODS Four different types of tablets were prepared: small or large, and with or without a surface coating. Fourteen normal male adults were instructed to swallow the prepared tablets with 15 ml of water.(More)