Maija-Liisa Laakso

Learn More
The aim of the study was to differentiate the impact of lighting conditions and feeding times on the regulation of lipid metabolism of goats under different photoperiods throughout the year. Seven Finnish landrace goats were kept under artificial lighting that simulated the annual changes of photoperiod at 60 degrees N (the longest light period 18 h, the(More)
The aim of the study was to find out whether there is a daily rhythm in goat serum cortisol concentrations, whether the concentration profiles differ between normal light:dark and constant dark conditions, and whether any seasonal variations might be detected in daily cortisol secretion patterns. Seven Finnish landrace goats were kept at indoor temperature(More)
BACKGROUND AND PURPOSE We studied the applicability of wrist actigraphy to sleep-wake estimation in patients with motor handicaps. PATIENTS AND METHODS Concomitant polysomnographic and actigraphic recordings (16-24 h) were compared in three groups: normally moving subjects with normal sleep (n=10), sleep-disordered subjects without motor handicaps (n=13)(More)
Vocalisations of six Macaca arctoides that were categorised according to their social context and judgements of naive human listeners as expressions of plea/submission, anger, fear, dominance, contentment and emotional neutrality, were compared with vowel samples extracted from simulations of emotional-motivational connotations by the Finnish name Saara and(More)
We studied the sleep-wake behavior of mentally retarded people from late winter to early summer at 60 degrees N. During this time the daylength increased 8 h 51 min. The data were collected by observing the sleep-wake status of 293 subjects at 20-min intervals for five randomized 24h periods (= recording days). The intervals during which the individual(More)
OBJECTIVES To develop a method for automatic detection of blinks in electrooculograms and to evaluate reliability of blink rate as an indicator of wake and sleep in subjects with developmental brain disorders. DESIGN Categorization of wake and sleep by blink rate was compared with visual sleep scoring of the polysomnograms. SETTING Ambulatory(More)
Sleep disturbances are common in many progressive metabolic encephalopathies. The possible presence of disturbed sleep–wake behaviour in the lysosomal storage disorder aspartylglucosaminuria, has not been previously studied, however. The sleep–wake behaviour of 81 patients with aspartylglucosaminuria (AGU, age 3–55 years, median 22 years; 42 female and 39(More)
OBJECTIVE : We studied whether the endogenous melatonin patterns in adult patients with developmental brain disorders have any role in response to exogenous melatonin given as a sleep-promoting medicine. METHODS : Participants included 15 adults (18-60 years, five females) with developmental brain disorders of varying etiologies, motor handicaps, and(More)
The purpose of the study was to explore parallel and divergent features of the daily rhythms of melatonin and plasma free fatty acids (FFA) in goats exposed to different lighting conditions. From these features, we attempted to analyze whether the endogenous melatonin rhythm plays any role in the maintenance of the FFA rhythm. Seven Finnish landrace goats(More)
  • 1