Lab Report On The And Light Control Group - 959 Words

Ratner Miller (1959) performed an experiment to show that earthworms would react to the illumination change in light being paired with food. In this experiment there are four groups being tested. There was an experimental group (EG), vibration control group (VCG), random-response control group (RRCG), and light control group (LCG). Group EG went through 130 trials with a 50 second interval in between each. Of the 130 trials the first 100 were conditioning and the last 30 were extinction. During the conditioning trials the vibratory stimulus (CS) was presented for 6 seconds. Then the light (US) was presented for 2 seconds after the first 4 seconds. A response occurring during the first 4 sec. of the CS, prior to the presentation of the US, was recorded as a conditioned withdrawal response. The extinction trials consisted of a 6 second vibration and all responses that happened in the first 4 seconds were recorded. Group VCG had 100 trials. This were done and recorded the same as group EG except that the US was not presented at any time. Group RRCG consisted of 100 trials for 4 seconds. These trials determined the number of spontaneous recoveries, where the CS and US were not presented during the trials. Then lastly group LCG was to determine if the US would cause animals to become sensitive to the vibration. This group went through 105 trials, 70 of them were light trials and 35 were vibration trials. The light was present for 2 seconds within blocks of 10 in the 70 lightShow MoreRelatedSouth Street Seaweed Report Essay706 Words   |  3 Pages South Street Seaweed Report Prasenjit Saha Chem lab 106 2/6/13 Spring 2014 Prasenjit Saha, Abdullah Sharif I. Warmup Questions 1. Coffee beans are crushed into small pieces, water is added to it and the mixture is heated over a flame. What do you think would happen to the coffee bean as it interacts with the water? Explain. 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