Maija-Liisa Laakso

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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)
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)
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)
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