en
0.25
0.5
0.75
1.25
1.5
1.75
2
Towards an Understanding of Olfactory Computation
Published on Jan 25, 20124560 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
Related categories
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