Results 251 to 260 of about 21,053 (305)
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The acoustic startle reflex in ischemic stroke
Neurology, 2004The authors recorded the acoustic startle response in 32 patients with stroke, 6 patients with incomplete cervical cord lesions, and 26 controls. Increased startle occurred in about one quarter of both stroke and spinal cord injury patients. The response in biceps demonstrated the greatest deviation from normal, with less marked changes in tibialis ...
S K, Jankelowitz, J G, Colebatch
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Effect of Thirst on the Acoustic Startle Reflex
Psychological Reports, 1985Eight rats were tested for acoustic startle, using a within-subjects design, while they were under either 0 or 21 hr. water deprivation. The startle stimulus was a percussive, non-tonal sound. No significant effect of thirst on startle was found.
H L, Armus, K A, Isham
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Exaggerated startle reflexes in an elderly woman
Movement Disorders, 1990AbstractA 76‐year‐old woman with a 5‐year history of excessive startle is reported. Electrophysiological recordings were made of muscle activation after acoustic and proprioceptive stimulation. The findings are discussed in relation to current knowledge of the startle reflex and classification of startle syndromes.
J G, Colebatch, G, Barrett, A J, Lees
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AUDIOGENIC STARTLE REFLEX OF MAN AND ITS RELATIONSHIP TO STARTLE SYNDROMES
Brain, 1986The normal human audiogenic startle reflex is defined from a review of the literature, substantiated by a current investigation of normal subjects, and clarified pathophysiologically by a discussion of animal experimentation. The basic information is used to evaluate critically a variety of syndromes loosely termed 'startle' in the past.
D E, Wilkins, M, Hallett, M M, Wess
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Emotion, attention, and the startle reflex.
Psychological Review, 1990This theoretical model of emotion is based on research using the startle-probe methodology. It explains inconsistencies in probe studies of attention and fear conditioning and provides a new approach to emotional perception, imagery, and memory. Emotions are organized biphasically, as appetitive or aversive (defensive).
P J, Lang, M M, Bradley, B N, Cuthbert
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Biomedical Radioelectronics
Observation and registration of the behavior of laboratory animals in response to a sound stimulus (Acoustic Startle Reflex - ASR) is one of the methods of experimental physiological research. The manifestation of this reflex is a startle - a rapid muscle twitching caused by a sudden and intense acoustic signal.
V.N. Chikhman +3 more
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Observation and registration of the behavior of laboratory animals in response to a sound stimulus (Acoustic Startle Reflex - ASR) is one of the methods of experimental physiological research. The manifestation of this reflex is a startle - a rapid muscle twitching caused by a sudden and intense acoustic signal.
V.N. Chikhman +3 more
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The acoustic startle reflex in stiff‐man syndrome
Neurology, 1994We studied the EMG response to loud noise in eight patients with stiff-man syndrome (SMS). Audiogenic muscle jerks originated in the acoustic startle reflex. Patients demonstrated excessive, poorly habituating motor activity predominantly in axial and leg muscles.
J Y, Matsumoto +2 more
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Acoustic Startle Reflex in Rhesus Monkeys: A Review
Reviews in the Neurosciences, 2008Modulation of the acoustic startle response is a simple and objective indicator of emotionality and attention in rodents and humans. This finding has proven extremely valuable for the analysis of neural systems associated with fear and anxiety. Until recently, there have been few efforts to develop acoustic startle measurement in non-human primates ...
Michael, Davis +3 more
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Middle Ear Reflex Activity in the Startle Reaction
Archives of Otolaryngology - Head and Neck Surgery, 1975By means of extratympanic phonometry, the middle ear muscular reflex activity in the startle reaction was measured in a control series, in patients with otosclerosis and in patients with operation cavaties without a functioning tensor tympani muscle.
O, Greisen, E B, Neergaard
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Psychopharmacology, 2002
IntroductionA large body of experimental literature indicates that the startle reflex is a sensitive measure of fear and anxiety. In both humans and animals, the startlereflex is increased when the startle-eliciting stimulus is presented in the presence of a cue that signals an aversive event, such as a shock (Davis andAstrachan 1978; Grillon et al ...
Grillon, C, Baas, J M P
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IntroductionA large body of experimental literature indicates that the startle reflex is a sensitive measure of fear and anxiety. In both humans and animals, the startlereflex is increased when the startle-eliciting stimulus is presented in the presence of a cue that signals an aversive event, such as a shock (Davis andAstrachan 1978; Grillon et al ...
Grillon, C, Baas, J M P
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