𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Influence of layer V of area 18 of the cat visual cortex on responses of cells in layer V of area 17 to stimuli of high velocity

✍ Scribed by J. M. Alonso; J. Cudeiro; R. Pérez; F. Gonzalez; C. Acuña

Publisher
Springer-Verlag
Year
1993
Tongue
English
Weight
409 KB
Volume
93
Category
Article
ISSN
0014-4819

No coin nor oath required. For personal study only.

✦ Synopsis

Focal blockade of restricted regions in layer V of area 18 was used to assess the contribution of this region to the responses to high-velocity stimuli of cells in retinotopically matched, layer V in area 17. In 40% of cases, blockade within area 18 revealed responses of area 17 cells to high-velocity stimuli to which they previously showed only poor responses. Stimulus specificity of the cells in area 17 was otherwise unaltered. All effects were reversible and repeatable. We suggest that a component of the output of layer V from area 18 normally suppresses the responses of retinotopically matched cells within area 17 to stimuli of high velocity, thereby enhancing the specificity of those cells to stimuli of low velocity.

📜 SIMILAR VOLUMES

Influence of the presentation of remote
Influence of the presentation of remote visual stimuli on visual responses of cat area 17 and lateral suprasylvian area
✍ G. Rizzolatti; R. Camarda 📂 Article 📅 1977 🏛 Springer-Verlag 🌐 English ⚖ 959 KB

Single units were recorded extracellularly from area 17 and lateral suprasylvian area (LSSA) in curarized cats. Visual stimuli, usually a 10 degree black spot, were introduced abruptly in the visual field remote from the discharge area of a neuron's receptive field and moved at a speed of about 30 d

Responses of single cells in cat's later
Responses of single cells in cat's lateral geniculate nucleus and area 17 to the velocity of moving visual stimuli
✍ R. Hess; W. Wolters 📂 Article 📅 1979 🏛 Springer-Verlag 🌐 English ⚖ 794 KB

Neuronal responses to moving visual stimuli were recorded in the lateral geniculate nucleus (LGN) and area 17 of cats. Response duration (DE), number of spikes (NT), and mean frequency (FM) were estimated from the response histograms and analysed for their dependence on stimulus velocity. In the LGN

Orientation tuning of cells in areas 17
Orientation tuning of cells in areas 17 and 18 of the cat's visual cortex
✍ P. Hammond; D. P. Andrews 📂 Article 📅 1978 🏛 Springer-Verlag 🌐 English ⚖ 661 KB

Sharpness and symmetry of orientation tuning were quantitatively investigated and compared in ninety-seven cells from areas 17 and 18 of the lightly-anaesthetised feline visual cortex. Halfwidths of orientation tuning at half-height ranged between 5 degrees and 73 degrees for long stimuli, with an e

Collinearity tolerance of cells in areas
Collinearity tolerance of cells in areas 17 and 18 of the cat's visual cortex: Relative sensitivity to straight lines and chevrons
✍ P. Hammond; D. P. Andrews 📂 Article 📅 1978 🏛 Springer-Verlag 🌐 English ⚖ 600 KB

Collinearity tolerance and length dependence of orientation tuning were compared in cells recorded from areas 17 and 18 of the lightly anaesthetised cat's visual cortex. Orientation tuning and interaction between receptive field halves of the same cells are reported in the preceding paper and elsewh