Antennal lobe is the deutocerebral neuropil of the insect which receives the input from the olfactory sensory neurons on the antenna. Functionally, it shares some similarities with the olfactory bulb in vertebrates. In insects, the olfactory pathway starts at the antennae (though in some insects like Drosophila there are olfactory sensory neurons in other parts of the body) from where the sensory neurons carry the information about the odorant molecules impinging on the antenna to the antennal lobe. The antennal lobe is composed of densely packed neuropils, termed glomeruli, where the sensory neurons synapse with the two other kinds of neurons, the projection neurons and the local neurons. There are 43 glomeruli in the Drosophila antennal lobe. The projection neurons project to higher brain centers such as the mushroom body and lateral horn of the protocerebrum. The local neurons, which are primarily inhibitory, have their neurites restricted to the antennal lobe. In Drosophila, each olfactory sensory neuron generally expresses a single olfactory receptor gene, and the neurons expressing a given gene all transmit information to one or two spatially invariant glomeruli in the antennal lobe. Moreover, each projection neuron generally receives information from a single glomerulus. The interaction between the olfactory receptor neurons, local neurons and projection neurons reformats the information input from the sensory neurons into a spatio temporal code before it is sent to higher brain centers. The plasticity and coding properties of the projection neurons are currently under intensive investigation at several laboratories. The following transmitted coded information is currently being researched and has been sent to various universities and geocachers in hopes that the interaction differences can be determined.
135 167 78 103 82 64 197 85 76 97 116 140 1 165 115 99 224 155 72 228 67 133 164 66 101 70 79 151 165 100 224 84 78 2 218 197 104 197 72 140 218 116 157 102 140 118 130 102 79 163 226 84 152 70 111 117 218 80 148 161 164 197 115 137 86 101 78 72 150 110 100 218 69 68 65 78 100 119 130 83 116 90 228 218 147 136 73 103 72 84 152 21 161 88 213 140 159 197 157 21 161 120 80 148 173 165 116 70 105 86 228 72 163 164 100 218 238 68 102 124 213 197 121 159 140 118 130
You can check your answers for this puzzle on GeoChecker.com.
