scholarly journals VARYING TEMPORAL PLACEMENT OF AN ADDED STIMULUS IN A FIXED-INTERVAL SCHEDULE1

1966 ◽  
Vol 9 (4) ◽  
pp. 369-375 ◽  
Author(s):  
John Farmer ◽  
W. N. Schoenfeld
Keyword(s):  
Fixed Interval ◽  
Temporal Placement

The Effects of Variable-Interval and Fixed-Interval Signal Presentation Schedules on the Auditory Evoked Response

1969 ◽  
Vol 12 (1) ◽  
pp. 199-209 ◽  
Author(s):  
David A. Nelson ◽  
Frank M. Lassman ◽  
Richard L. Hoel
Keyword(s):  
Variable Interval ◽  
Tone Burst ◽  
Signal Amplitude ◽  
Fixed Interval ◽  
Interval Schedule ◽  
Sensation Level ◽  
Fixed Interval Schedule ◽  
Auditory Evoked Responses ◽  
Auditory Evoked Response ◽  
Signal Presentation

Averaged auditory evoked responses to 1000-Hz 20-msec tone bursts were obtained from normal-hearing adults under two different intersignal interval schedules: (1) a fixed-interval schedule with 2-sec intersignal intervals, and (2) a variable-interval schedule of intersignal intervals ranging randomly from 1.0 sec to 4.5 sec with a mean of 2 sec. Peak-to-peak amplitudes (N 1 — P 2 ) as well as latencies of components P 1 , N 1 , P 2 , and N 2 were compared under the two different conditions of intersignal interval. No consistent or significant differences between variable- and fixed-interval schedules were found in the averaged responses to signals of either 20 dB SL or 50 dB SL. Neither were there significant schedule differences when 35 or 70 epochs were averaged per response. There were, however, significant effects due to signal amplitude and to the number of epochs averaged per response. Response amplitude increased and response latency decreased with sensation level of the tone burst.

Fixed Interval Drinking Decisions. I. A Research and Treatment Model

1972 ◽  
Vol 33 (2) ◽  
pp. 311-324 ◽  
Author(s):  
Edward Gottheil ◽  
Lacey O. Corbett ◽  
Joseph C. Grasberger ◽  
Floyd S. Cornelison
Keyword(s):  
Fixed Interval ◽  
Treatment Model

scholarly journals Thermal burns in electroconvulsive therapy

2021 ◽  
pp. 201010582110310
Author(s):  
Ernest Weisheng Ho ◽  
Eng Leonard ◽  
Lee Tih-Shih ◽  
Gregory James Meredith
Keyword(s):  
Case Report ◽  
Mood Disorders ◽  
Electroconvulsive Therapy ◽  
Ignition Source ◽  
Thermal Burns ◽  
High Impedance ◽  
Temporal Placement ◽  
Close Proximity ◽  
Life Threatening

Electroconvulsive therapy (ECT) is effective for mood disorders and schizophrenia. Thermal burns, while rare, are potentially sight and life threatening. The three elements necessary for a fire are often in close proximity during a session: an oxidiser (oxygen), an ignition source (faulty electrodes, poor contact with skin producing a spark) and fuel (hair, residual alcohol cleanser). This case report describes one such incident when a patient sustained a burn during ECT, with poor contact of electrode pad with skin, high impedance and an oxygen-rich environment possibly contributing. Given that ECT is conducted relatively frequently (once every 2–3 days) in a usual regimen, we make recommendations for safe application of electrode pads for temporal placement ECT.

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