RESUMEN
Change blindness describes the surprising difficulty of detecting large changes in visual scenes when changes occur during a visual disruption. In order to study the developmental course of this phenomenon, a modified version of the flicker paradigm, based on Rensink, O'Regan & Clark (1997), was given to three groups of children aged 6-12 years and to a group of adults. This paradigm tested the ability to detect single colour, presence/absence and location changes of both high and low semantic importance in a complex scene. Semantically important changes were detected more quickly and accurately than less semantically important changes, by all age groups, indicating that children had the same attentional priorities as adults. Older children achieved more efficient and accurate detection of changes than younger children and reached almost adult level at 10-12 years old. These improvements parallel age-related developments in attention and visual perception.
Asunto(s)
Atención/fisiología , Percepción Visual , Niño , Desarrollo Infantil , Humanos , Enmascaramiento Perceptual , Estimulación LuminosaRESUMEN
An anaesthetic technique for bronchoscopy is described, based on increments of methohexitone given in strict relation to body weight and time, suxamethonium being used to produce relaxation. There was no awareness in the 75 patients studied, while the recovery was rapid and unrelated to the duration of bronchoscopy. The efficacy of small aliquots of lignocaine in reducing injection pain was the same whether given before, or mixed with, the initial methohexitone injection. Other sequelae relating to the anaesthetic technique were minimal.
Asunto(s)
Anestesia Intravenosa/métodos , Broncoscopía/métodos , Adulto , Anciano , Concienciación/efectos de los fármacos , Femenino , Humanos , Lidocaína , Masculino , Metohexital/efectos adversos , Persona de Mediana Edad , Dolor/inducido químicamente , Dolor/tratamiento farmacológicoRESUMEN
A safety block is described which protects the patient from expiratory obstruction when using scavenging systems, and provides the anaesthetist with a visual and auditory check on the functioning of the system.
Asunto(s)
Anestesia por Inhalación/instrumentación , Humanos , Dispositivos de Protección RespiratoriaRESUMEN
Two simple anaesthetic techniques were administered to forty healthy women undergoing minor gynaecological surgery. There was a significantly shorter immediate recovery period following the use of a fentanyl and methohexitone technique. Memory function testing revealed an impairment of the ability to retain new information following anaesthesia. This returned to normal within 3 hr.
Asunto(s)
Procedimientos Quirúrgicos Ambulatorios , Anestesia General/métodos , Memoria/efectos de los fármacos , Adulto , Centros de Día , Femenino , Fentanilo/farmacología , Humanos , Metohexital/farmacología , Periodo Posoperatorio , Tricloroetileno/farmacologíaRESUMEN
A case of accidental massive overdose of lignocaine while a patient was on cardiopulmonary bypass is described. The benefits of cardiopulmonary bypass and cardiac pacing in the management of the patient are discussed.