EurekaMag.com logo
+ Translate

Spectral and orientation specificity of single cells in foveal striate cortex of the vervet monkey, Cercopithecus aethiops


, : Spectral and orientation specificity of single cells in foveal striate cortex of the vervet monkey, Cercopithecus aethiops. Journal of Physiology 268(1): 1-20

1. The spectral sensitivity, orientation specificity and inhibitory surround of seventy-three cells were studied in the vervet monkey. The eye was in the dark or illuminated with steady white or spectral light. The cells were in the striate cortex corresponding to the foveal representation. Nearly all the cells gave on- or on/off-responses.2. More than a third of the cells (41%) responded over a narrow spectral band, in the blue, green, yellow or red section. Three quarters of them were orientation specific with flanking inhibitory surround and half of these were of the ;stopped-end' variety as well. The effect of the wave-length of the background indicated that only a half were activated by such excitatory-inhibitory colour pairs as have been described in the geniculate nucleus.3. A third of the cells (36%) responded to most colours but with the greatest response to green, yellow or red. Less than half were orientation specific. Unlike the narrowband cells, the response decreased with the intensity of the light. Two thirds were activated by the excitatory-inhibitory colour pairs that have been described in the geniculate nucleus.4. In both groups of cells the wave-length of the spectral peak could be different when the stimuli were weak compared with when they were strong.5. One quarter of the cells (23%) gave on/off-responses to all spectral flashes; half were not orientation specific. The difference in orientation specificity between narrow- and broadband cells is significant (P < 0.01).

(PDF same-day service: $19.90)

Accession: 006459514

PMID: 406386

DOI: 10.1113/jphysiol.1977.sp011843

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Bertulis A.; Guld C.; Lennox Buchthal M., 1976: Spectral responsiveness and orientation specificity of single cells in foveal striate cortex of vervet monkey. Acta Physiologica Scandinavica Supplementum 440: 58

Guld, C.; Bertulis, A., 1976: Representation of fovea in the striate cortex of vervet monkey, Cercopithecus aethiops pygerythrus. Vision Research 16(6): 629-631

Dow, B.M.; Gouras, P., 1973: Color and spatial specificity of single units in Rhesus monkey foveal striate cortex. Journal of Neurophysiology 36(1): 79-100

Ringvold, A., 1978: Actin filaments in trabecular endothelial cells in eyes of the vervet monkey. (Cercopithecus aethiops). An electron microscopic study was performed on the trabecular meshwork of two monkeys (cercopithecus aethiops). Specimens from one animal revealed numerous cytoplasmic filaments of 45-65 A thickness in endothelial cells both on the trabeculae in t...

Louw, J.; Woodroof, C.W.; Wolfe-Coote, S.A., 1997: Distribution of endocrine cells displaying immunoreactivity for one or more peptides in the pancreas of the adult vervet monkey (Cercopithecus aethiops). Our previous studies on the Chacma baboon revealed that the most striking difference between islets of the ventral and dorsal regions of the pancreas was their content of A and pancreatic polypeptide (PP) cells with A cells predominating in the ta...

Louw, J.; Woodroof, C.W.; Wolfe-Coote, S.A., 1997: Distribution of endocrine cells displaying immunoreactivity for one or more peptides in the pancreas of the adult Vervet monkey (Cercopithecus aethiops). Background: Our previous studies on the Chacma baboon revealed that the most striking difference between islets of the ventral and dorsal regions of the pancreas was their content of A and pancreatic polypeptide (PP) cells with A cells predominati...

Schiller, P.H.; Finlay, B.L.; Volman, S.F., 1976: Quantitative studies of single-cell properties in monkey striate cortex. II. Orientation specificity and ocular dominance. 1. Quantitative analyses of orientation specificity and ocular dominance were carried out in striate cortex of the rhesus monkey. 2. Sharpness of orientation selectivity was greater for simple (S type) than for complex (CX type) cells. CX-type cel...

Schiller, P.H.; Finlay, B.L.; Volman, S.F., 1976: Quantitative studies of single cell properties in monkey striate cortex part 2 orientation specificity and ocular dominance. Orientation specificity and ocular dominance were examined quantitatively in striate cortex of the rhesus monkey. The degree of orientation selectivity varied over a broad range. Simple cells (S type) were more sharply selective for orientation th...

Struhsaker, T.T., 1966: Behavior of the vervet monkey Cercopithecus aethiops. Dissertation Abstracts, 26(12): 7513

Dow B.M.; Bauer R.; Snyder A.Z.; Vautin R.G., 1985: Receptive fields and orientation shifts in the foveal striate cortex of the awake macaque monkey. Edelman, G M , W E Gall And W M Cowan (Ed ) The Neurosciences Institute Publication Series: Dynamic Aspects Of Neocortical Function; Annual Symposia Of The Neurosciences Institute Of The Neurosciences Research Program Ix+718p John Wiley And Sons, Inc : Somerset, N J , Usa; Chichester, England Illus 41-66