. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. M. ZOCHOWSKI £T AL B. RESPONSE TO SIPHON TOUCH IN APLYSIA. Movement Stim 2s hinure 5. Raster diagram of the action-potential activity recorded optically from an Apl\\ia abdominal ganglion during a gill-withdrawal reflex. The touch to the siphon began at the time of the line labeled STIM. In this recording, activity in 135 neurons measured. We think indicated on the image by the numbered squares on the left. In rostral locations (detectors 1 and 2). we found a single oscillation with a relatively high frequency. On
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. M. ZOCHOWSKI £T AL B. RESPONSE TO SIPHON TOUCH IN APLYSIA. Movement Stim 2s hinure 5. Raster diagram of the action-potential activity recorded optically from an Apl\\ia abdominal ganglion during a gill-withdrawal reflex. The touch to the siphon began at the time of the line labeled STIM. In this recording, activity in 135 neurons measured. We think indicated on the image by the numbered squares on the left. In rostral locations (detectors 1 and 2). we found a single oscillation with a relatively high frequency. On a diode from a middle location (detector 4) there was a relatively brief, short-latency oscillation, and on a diode from the caudal bulb (detector 7). the oscillation was of a lower frequency and a long latency. In areas between two regions, the recorded oscillations were combinations of two signals: rostral/middle in detector 3 and middle/caudal in detectors 5 and 6. We named the three oscillations rostral, middle, and caudal. The fractional change in fluorescence (AF/F) in these three signals ranged from about 2 X 10 4 to 10 "'; the noise was substantially smaller. In addition, a DC signal, which appears as a single peak after high-pass filtering in Figure 6. was observed over most of the ipsilateral olfactory bulb. Figure 7A shows the time course of an untiltered recording. Following the start of the odor command pulse. the optical signal Rise to a plateau and then continued for several seconds. After a short delay, the rostral oscillations appeared on the DC response. The rostral oscillation had a long latencv and a high frequency. The middle oscillation had a short latency and a frequency that was similar to the rostral oscillation. The caudal oscillation had a lower fre- quency and the longest latency. In addition to differences in frequency and latency, the three oscillations also had dif- ferent shapes—the rostral and caudal oscillations had rela- tively sharp
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
