Stimulus-dependent modulations of correlated high-frequency oscillations in cat visual cortex.

The hypothesis that correlated neural activity is involved in the cortical representation of visual stimuli was examined by recording multi-unit activity and local field potentials from neurons with non-overlapping receptive fields in areas 17 and 18. Using coherence functions, correlations of oscillatory patterns (35-100 Hz) of neural signals were investigated under three stimulus conditions: (i) a whole field grating or a long bar moving across both receptive fields; (ii) masking the region between both receptive fields while stimulating the remaining visual field; and (iii) two separate stimuli simultaneously moving in opposite directions. Coherences of oscillations were found to be significantly higher in the first stimulus condition than in the other two conditions. Since different visual stimuli were reflected in the coherence of neural activity, we concluded that correlated neural activity is a potential candidate for coding of sensory information.

[1]  Athanasios Papoulis,et al.  Probability, Random Variables and Stochastic Processes , 1965 .

[2]  C. Blakemore,et al.  The neural mechanism of binocular depth discrimination , 1967, The Journal of physiology.

[3]  G. P. Moore,et al.  Neuronal spike trains and stochastic point processes. II. Simultaneous spike trains. , 1967, Biophysical journal.

[4]  R. Elul.  The genesis of the EEG. , 1971, International review of neurobiology.

[5]  H B Barlow,et al.  Single units and sensation: a neuron doctrine for perceptual psychology? , 1972, Perception.

[6]  G L Gerstein,et al.  Interactions between neurons in auditory cortex of the cat. , 1974, Journal of neurophysiology.

[7]  F. Harris.  On the use of windows for harmonic analysis with the discrete Fourier transform , 1978, Proceedings of the IEEE.

[8]  H. Vaughan,et al.  Averaged multiple unit activity as an estimate of phasic changes in local neuronal activity: effects of volume-conducted potentials , 1980, Journal of Neuroscience Methods.

[9]  M. Abeles.  Local Cortical Circuits: An Electrophysiological Study , 1982 .

[10]  Ron D. Frostig,et al.  The effects of stimuli on the activity and functional connectivity of local neuronal groups in the cat auditory cortex , 1983, Brain Research.

[11]  Ch. von der Malsburg,et al.  How are Nervous Structures Organized , 1983 .

[12]  H. J. Reitboeck,et al.  A Multi-Electrode Matrix for Studies of Temporal Signal Correlations Within Neural Assemblies , 1983 .

[13]  D. O. Hebb,et al.  The organization of behavior , 1988 .

[14]  George L. Gerstein,et al.  Cortical auditory neuron interactions during presentation of 3-tone sequences: effective connectivity , 1988, Brain Research.

[15]  A. P. Georgopoulos,et al.  Primate motor cortex and free arm movements to visual targets in three- dimensional space. II. Coding of the direction of movement by a neuronal population , 1988, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[16]  A. P. Georgopoulos,et al.  Primate motor cortex and free arm movements to visual targets in three- dimensional space. III. Positional gradients and population coding of movement direction from various movement origins , 1988, The Journal of neuroscience : the official journal of the Society for Neuroscience.

[17]  J. Krüger,et al.  Multimicroelectrode investigation of monkey striate cortex: spike train correlations in the infragranular layers. , 1988, Journal of neurophysiology.

[18]  W. Singer,et al.  Stimulus-specific neuronal oscillations in orientation columns of cat visual cortex. , 1989, Proceedings of the National Academy of Sciences of the United States of America.

[19]  M K Habib,et al.  Dynamics of neuronal firing correlation: modulation of "effective connectivity". , 1989, Journal of neurophysiology.

[20]  W. Singer,et al.  Oscillatory responses in cat visual cortex exhibit inter-columnar synchronization which reflects global stimulus properties , 1989, Nature.

[21]  E Ahissar,et al.  Oscillatory activity of single units in a somatosensory cortex of an awake monkey and their possible role in texture analysis. , 1990, Proceedings of the National Academy of Sciences of the United States of America.

[22]  W. Singer,et al.  Stimulus‐Dependent Neuronal Oscillations in Cat Visual Cortex: Inter‐Columnar Interaction as Determined by Cross‐Correlation Analysis , 1990, The European journal of neuroscience.

[23]  P König,et al.  Direct physiological evidence for scene segmentation by temporal coding. , 1991, Proceedings of the National Academy of Sciences of the United States of America.

[24]  Michael Brosch,et al.  Stimulus-Specific Synchronizations in Cat Visual Cortex: Multiple Microelectrode and Correlation Studies from Several Cortical Areas , 1992 .

[25]  M. Ahissar,et al.  Encoding of sound-source location and movement: activity of single neurons and interactions between adjacent neurons in the monkey auditory cortex. , 1992, Journal of neurophysiology.

[26]  W. Singer,et al.  Squint Affects Synchronization of Oscillatory Responses in Cat Visual Cortex , 1993, The European journal of neuroscience.

[27]  J J Eggermont,et al.  Neural interaction in cat primary auditory cortex II. Effects of sound stimulation. , 1994, Journal of neurophysiology.

[28]  Roman Bauer,et al.  Different rules of spatial summation from beyond the receptive field for spike rates and oscillation amplitudes in cat visual cortex , 1995, Brain Research.

[29]  A. Aertsen,et al.  Dynamics of neuronal interactions in monkey cortex in relation to behavioural events , 1995, Nature.

[30]  R. Eckhorn,et al.  Synchronous High‐frequency Oscillations in Cat Area 18 , 1995, The European journal of neuroscience.