Videotape Recording Formats

Masturbatory behaviors occur as a part of psychosexual development in young children, but if such behaviors exceed resulting in discomfort and disability, it is known as gratification disorder. Children with such genital self-stimulatory behaviors are infrequently seen and diagnosed in Asian outpatient settings, possibly due to prevalent stigma. We report the cases of 3 children of 3, 4, and 8 - year-old with the diagnosis of gratification disorder based on comprehensive history-taking, general physical examination, and neurological examination along with videotape recording of the event. Investigations such as electroencephalogram (EEG), urinary microscopic examination, and culture were also conducted in each case. Clinical history, examination, and investigations such as EEG and urinary examination were reviewed. Behavior therapy and psychoeducation were successful in alleviating the disorder and allaying parental fears of taboo in all these cases. There was significant improvement in self-genital stimulatory behavior in all 3 cases at 3 months follow-up.

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Haemorheological Effects on Thrombocyte Adhesion and Aggregation Found Under Controlled Flow Conditions

10.1055/s-0039-1687333 ◽

1979 ◽

Author(s):

P.D. Richardson

Keyword(s):

Rate Of Change ◽

Continuous Observation ◽

Flow Conditions ◽

Wide Range ◽

Stream Migration ◽

Local Shear ◽

Videotape Recording ◽

Controlled Flow ◽

A Site

Thrombocyte adhesion and aggregation in a vessel or on a chamber wall can be measured most readily if the flow is controlled and steady, and continuous observation is used. Videotape recording is very helpful for subsequent quantification of the dynamics. The adhesion of each thrombocyte can occur for a finite time interval:this interval has been observed to have a wide range. Platelets which escape often leave open a site which attracts other platelets preferentially. The rate of change of adhesion density (platelets/mm2) is affected by the local shear rate and the shear history upstream. Aggregation is affected similarly, and also proceeds with some platelet turnover. The role of erythrocytes in facilitating cross-stream migration of thrombocytes (which can enhance the growth rate of large thrombi) appears due in part to convective flow fields induced by the motion of erythrocytes in a shear flow, which can be demonstrated theoretically and experimentally. Observations of the phenomenlogy of adhesion and aggregation under controlled flow conditions and comparison with fLu id-dynamically based theory allows representation in terras of a small number of parameters with prospects of prediction of behaviour over a wide range of haemodynamic conditions; biochemical changes lead to changes in values of the parameters, so that activating agents and inhibiting agents modify values in different directions.

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Videotape recording

Digital Video and HDTV ◽

10.1016/b978-155860792-7/50101-4 ◽

2003 ◽

pp. 411-428

Author(s):

Charles Poynton

Keyword(s):

Videotape Recording

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Videotape Recording

Electronics Engineer's Reference Book ◽

10.1016/b978-0-408-05430-0.50066-0 ◽

1989 ◽

pp. 61/1-61/9

Author(s):

S Lowe

Keyword(s):

Videotape Recording

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Stimulus-response relations and stability of mechanoreceptor and motor neurons mediating defensive gill-withdrawal reflex in Aplysia

Journal of Neurophysiology ◽

10.1152/jn.1978.41.2.402 ◽

1978 ◽

Vol 41 (2) ◽

pp. 402-417 ◽

Cited By ~ 26

Author(s):

J. H. Byrne ◽

V. F. Castellucci ◽

T. J. Carew ◽

E. R. Kandel

Keyword(s):

Motor Neurons ◽

Strain Gauge ◽

Mantle Cavity ◽

Moderate Intensity ◽

Stimulus Response ◽

Defensive Reflex ◽

Short And Long Term ◽

Videotape Recording ◽

The Stability

1. A weak or moderate-intensity tactile stimulus delivered to the siphon skin of Aplysia californica elicits a defensive reflex withdrawal of the gill and siphon into the mantle cavity. The reflex undergoes both short- and long-term habituation and sensitization and has, therefore, been used as a model system to examine various forms of learning. In this paper we describe studies of the response properties of the sensory and motor neurons of the reflex during repeated stimulation at rates that produce habituation. 2. The sensory neurons are slowly adapting mechanoreceptor cells whose frequency of discharge is a monotonic function of controlled-force punctate stimuli delivered to the skin. The majority of the stimulus-response relations could best be described by exponential functions. 3. We examined the stability of the sensory neuron responses in two ways; with punctate stimuli of varying intensity and with water jets of varying intensity. 4. With repeated punctate stimulation at rates which produce habituation in the intact animal the mechanoreceptor discharge showed no decrement. This stability was observed over a 10-fold range of intensities. 5. Weak or moderate intensity water-jet stimuli to the skin also gave stable responses but stronger stimuli caused the mechanoreceptor response to fatigue. 6. We examined the stability of the motor responses by using intracellular depolarizing current pulses to produce repetitive bursts of action potentials in gill motor neurons while monitoring the gill contractions with a strain gauge, photocell, or videotape recorder. The photocell and strain gauge were alternatively used in the same experiment. Gill contractions monitored with the photocell were stable, whereas those monitored by the strain gauge showed decrement. An independent measure of gill contraction, videotape recording, confirmed the results obtained with the photocell and showed that the gill contractions following repeated intracellular depolarization of the motor neurons were stable.

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