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Towards an Understanding of Olfactory Computation
Published on Jan 25, 20124559 Views
Olfaction is a fascinating sensory modality, for it deals with complex stimuli (usually complex mixtures of chemical analytes) and generates singular percepts (coffee, jasmin, bread etc), that remain
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Chapter list
Towards an understanding of olfactory computation00:00
Data processing00:54
1. Pathways and Representations03:23
Feedforward -203:41
Relay 2 - 106:42
Relay 2 - 208:10
Relay 2 - 308:28
A few details - 109:08
A few details - 209:09
Antennal Lobe - 109:14
Antennal Lobe - 209:21
Antennal Lobe - 309:28
Antennal Lobe - 409:47
Slow Dynamics - 110:01
Slow Dynamics - 210:44
Slow Dynamics - 311:36
Slow Dynamics - 412:08
Slow Dynamics - 513:26
Slow Dynamics - 613:48
Slow Dynamics - 713:48
Slow Dynamics - 814:32
Slow Dynamics - 914:59
Slow Dynamics - 1015:22
Slow Dynamics - 1115:53
Slow Dynamics - 1215:56
A unique interneuron for normalization - 116:25
A unique interneuron for normalization - 216:34
Relay 3 16:45
bLN4 - 116:46
bLN4 - 217:07
Where does learning occur? - 117:33
Where does learning occur? - 218:02
KC - bLN synapse18:12
in vivo18:56
2. Synaptic Plasticity (STDP) 19:59
Synaptic Plasticity (STDP)20:03
STDP rule20:44
Does STDP have anything to do with Olfactory Conditioning?21:06
Cumulative Jitter21:52
+STDP22:45
Principle23:05
3. Problem with STDP (and Solution)24:11
One problem with STDP24:20
The solution: bLN lateral inhibition - 125:09
The solution: bLN lateral inhibition - 225:45
LI + STDP help set output near center of dyn. range26:14
Pr≈ 0.526:16
Coding space expansion26:31
But what about olfactory learning?27:12
4. STDP and Odor Learning27:21
Associative learning27:24
What does OCT do to STDP?28:46
dt<030:12
Rule Change31:19
Specificity31:36
c then p - 132:50
c then p - 233:07
p then c - 133:25
p then c - 233:27
Summary33:54
Consequences of OCT-STDP on bLN population34:06
Experiment35:20
Specificity35:38
Coding space expansion - 137:14
Coding space expansion - 237:37
Innate pathway - 138:07
Innate pathway - 238:57
Conclusions on STDP39:15
Caltech Team40:47
201141:12