. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Caudal Rostral 1 mm Rostral -^^. 10% cineole 400ms Figure 6. Simultaneous optical recordings from seven areas of an olfactory bulb. An image of the olfactory bulb is shown on the left. Signals from seven selected pixels are shown on the right. The positions of these pixels are labeled with squares and numbers on the image of the bulb. All seven signals have a filtered version of the DC signal at the time indicated by the bar labeled DC. The oscillation in the rostral region has a high frequency and relatively long latency an
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Caudal Rostral 1 mm Rostral -^^. 10% cineole 400ms Figure 6. Simultaneous optical recordings from seven areas of an olfactory bulb. An image of the olfactory bulb is shown on the left. Signals from seven selected pixels are shown on the right. The positions of these pixels are labeled with squares and numbers on the image of the bulb. All seven signals have a filtered version of the DC signal at the time indicated by the bar labeled DC. The oscillation in the rostral region has a high frequency and relatively long latency and duration (detectors I and 2). The oscillation from the middle region has a high frequency and short latency and duration (detector 4). The oscillation from the caudal region has a lower frequency and the longest latency (detector 7). The signal from detectors between these regions (3, 5, and 6) appears to contain a mixture of two components. The horizontal line labeled "10% cineole" indicates the time of the command pulse to the odor solenoid. The data are filtered by a high-pass digital RC 15 Hz) and low-pass Gaussian (30 Hz) filters. (Modified from Lam et al, 2000.) able to speculate that oscillations may be important in perception. Our data show that the odor-induced oscillations in the olfactory bulb are substantially more complicated than had been anticipated and that multiple functional pop- ulation domains are processing olfactory input in parallel. In vivo mammalian brain. Population signals are more difficult to measure from in vivo mammalian preparations than from the turtle because the noise from the heartbeat and respiration is greater and because staining is more difficult. Two methods for reducing the movement arti- facts from the heartbeat are, together, quite effective. First, a subtraction procedure is used in which two re- cordings are made but only one of the trials has a stim- ulus (Orbach et al., 1985). Both recordings are triggered from the ups
Size: 1380px × 1811px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
