Download Local Cortical Circuits

Moshe Abeles
Local Cortical
Circuits
An Electrophysiological Study
With 31 Figures
FACHBEREICH BIOLOQIE (10)
der Technischen H d
-
Bibliotfiek
-
D - 6 1 0 0 D a r m s t a d t / B. R.D
SchniftsoahnsiroBp
Springer-Verlag
Berlin Heidelberg New York 1982
Contents
1 Introduction
2 Techniques
2.1
2.2
2.3
2.4
1
,
5
Single-Unit Recording
Multi-Unit Analysis
Limitations of Our Recordings Technique
Analysis of Spike Trains by Renewal Density
5
7
8
10
3 The Spontaneous Firing of Cortical Neurons
3.1
3.2
3.3
3.4
13
Patterns of Firing
Neural Mechanisms
Membrane Potential, Threshold, and Excitability
Sources of Excitatory Inputs
13
15
20
23
4 Interactions Between Pairs of Cells
4.1
4.2
4.3
4.4
4.5
27
Cross-Renewal Density
Types of Cross Renewal Densities
Synaptic Relations Between Adjacent Neurons
Sources of Excitation Within Groups of Neurons
Is the Cortical Network Randomly Connected?
27
28
30
32
34
5 Responses to Sound
5.1
5.2
5.3
5.4
Stating the Problem
> ; . .Responses of Groups of Neurons to Sound
Stability of the Cortical Network
Is the Auditory Cortex a Purely Sensory Station?
41
:
41
42
46
50
6 Spatio-Temporal Patterns of Activity
57
6.1 Compound Renewal Densities
6.2 How Three Cells Interact
57
60
7 Transmission of Information by Coincidence . .
7.1 The Single Neuron as a Coincidence Detector
7.2 Existence of Chains of Neuronal Sets with Appropriate
Connections
7.3 Some Properties of Synfire Chains
8 Organization of Generators of the ECoG
8.1 The Generation of the ECoG
8.2 Population Statistics and ECoG
8.3 Experimental Results
9 Information Codes for Higher Brain Function
67
68
69
71
77
77
78
82
85
9.1 Hypotheses
85
9.2 Experimental Evidence
87
10 Conclusion
'. 91
References
97
Subject Index
101