当前位置： SCI文献检索 > VISION RESEARCH期刊下所有文献 > Contrast sensitivity and spatial frequency response of primate cortical neurons in and around the cytochrome oxidase blobs.

Contrast sensitivity and spatial frequency response of primate cortical neurons in and around the cytochrome oxidase blobs.

Abstract：

:The striate cortex of macaque monkeys contains an array of patches which stain heavily for the enzyme cytochrome oxidase (CO blobs). Cells inside and outside these blobs are often described as belonging to two distinct populations or streams. In order to better understand the function of the CO blobs, we measured the contrast sensitivity and spatial frequency response of single neurons in and around the CO blobs. Density profiles of each blob were assessed using a new quantitative method, and correlations of local CO density with the physiology were noted. We found that the CO density dropped off gradually with distance from blob centers: in a typical blob the CO density dropped from 75% to 25% over 100 microns. Recordings were confined to cortical layers 2/3. Most neurons in these layers have poor contrast sensitivity, similar to that of the parvocellular neurons in the lateral geniculate nucleus. However, in a small proportion of layers 2/3 neurons we found higher contrast sensitivity, similar to that of the magnocellular neurons. These neurons were found to cluster near blob centers. This finding is consistent with (indirect) parvocellular input spread uniformly throughout layers 2/3, and (indirect) magnocellular input focused on CO blobs. We also measured spatial tuning curves for both single units and multiple unit activity. In agreement with other workers we found that the optimal spatial frequencies of cells near blob centers were low (median 2.8 c/deg), while the optimal frequencies of cells in the interblob regions were spread over a wide range of spatial frequencies. The high cut-off spatial frequency of multi-unit activity increased with distance from blob centers. We found no correlation between spatial bandwidth and distance from blob centers. All measured physiological properties varied gradually with distance from CO blob centers. This suggests that the view of blob cells subserving visual functions which are entirely distinct from non-blob cells may have to be reevaluated.

journal_name

Vision Res

journal_title

Vision research

authors

Edwards DP,Purpura KP,Kaplan E

doi

10.1016/0042-6989(94)00253-i

subject

Has Abstract

pub_date

1995-06-01 00:00:00

pages

1501-23

issue

11

eissn

0042-6989

issn

1878-5646

pii

0042-6989(94)00253-I

journal_volume

35

pub_type

杂志文章

相关文献

VISION RESEARCH文献大全
  • An illusory transformation of optic flow fields.

    abstract：:We compared a human observer's ability to locate the focus of expansion (FOE) of a radial optic flow field when this flow field was either combined with, or overlapped by, planar motion. With combined stimuli, in which the FOE was displaced in the direction opposite to the planar motion, subjects accurately located th...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(93)90141-i

    authors： Duffy CJ,Wurtz RH

    更新日期：1993-07-01 00:00:00

  • Attentional modulation of crowding.

    abstract：:Outside the fovea, the visual system pools features of adjacent stimuli. Left or right of fixation the tilt of an almost horizontal Gabor pattern becomes difficult to classify when horizontal Gabors appear above and below it. Classification is even harder when flankers are to the left and right of the target. With all...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2010.01.022

    authors： Mareschal I,Morgan MJ,Solomon JA

    更新日期：2010-04-07 00:00:00

  • Receptive versus perceptive fields from the reverse-correlation viewpoint.

    abstract：:This brief review article brings together a series of related experiments in psychophysics and physiology that show striking similarities between measurements in human observers and in single neurons. We consider seven pairs of primary research articles, each pair consisting of one paper in physiology and one in psych...

    journal_title：Vision research

    pub_type： 杂志文章,评审

    doi：10.1016/j.visres.2006.02.002

    authors： Neri P,Levi DM

    更新日期：2006-08-01 00:00:00

  • Specific effects of spatial-frequency uncertainty and different cue types on contrast detection: data and models.

    abstract：:If the spatial-frequency of sinusoidal signals in a contrast-detection experiment varies randomly from trial to trial, then performance is decreased compared with that in a situation where it remains constant. This spatial-frequency uncertainty effect can more or less be compensated by presenting informative cues shor...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(96)00088-0

    authors： Hübner R

    更新日期：1996-11-01 00:00:00

  • MT neurons in the macaque exhibited two types of bimodal direction tuning as predicted by a model for visual motion detection.

    abstract：:We previously proposed a model for detecting local image velocity on the magnocellular visual pathway (Kawakami & Okamoto (1996) Vision Research, 36, 117-147). The model detects visual motion in two stages using the hierarchical network that includes component and pattern cells in area MT. To validate the model, we pr...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(99)00073-5

    authors： Okamoto H,Kawakami S,Saito H,Hida E,Odajima K,Tamanoi D,Ohno H

    更新日期：1999-10-01 00:00:00

  • Effects of picrotoxin on light adapted frog electroretinogram are not due entirely to its action in proximal retina.

    abstract：:In order to evaluate the site of action of picrotoxin (antagonist of ionotropic GABA receptors) on the electroretinographic (ERG) b- and d-waves, in this study we compared its effects on the intensity-response function of the ERG waves in intact light adapted frog eyecup preparations with its effects in eyecups, where...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2014.06.012

    authors： Popova E

    更新日期：2014-08-01 00:00:00

  • Adaptive face coding and discrimination around the average face.

    abstract：:Adaptation paradigms highlight the dynamic nature of face coding and suggest that identity is coded relative to an average face that is tuned by experience. In low-level vision, adaptive coding can enhance sensitivity to differences around the adapted level. We investigated whether sensitivity to differences around th...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2006.12.010

    authors： Rhodes G,Maloney LT,Turner J,Ewing L

    更新日期：2007-03-01 00:00:00

  • Saccadic countermanding: a comparison of central and peripheral stop signals.

    abstract：:We compared the effectiveness of central and peripheral targets in a saccadic countermanding task. Stop-signal reaction times (SSRTs) do not differ significantly for central and peripheral stop signals. Further, when central and peripheral stop signals are presented together, SSRTs behave as expected of independent pr...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(01)00107-9

    authors： Asrress KN,Carpenter RH

    更新日期：2001-09-01 00:00:00

  • Electrophysiological correlates of figure-ground segregation directly reflect perceptual saliency.

    abstract：:In a figure identification task, we investigated the influence of different visual cue configurations (spatial frequency, orientation or a combination of both) on the human EEG. Combining psychophysics with ERP and time-frequency analysis, we show that the neural response at about 200ms reflects perceptual saliency ra...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2009.12.013

    authors： Straube S,Grimsen C,Fahle M

    更新日期：2010-03-05 00:00:00

  • Perceptual adaptation helps us identify faces.

    abstract：:Adaptation is a fundamental property of perceptual processing. In low-level vision, it can calibrate perception to current inputs, increasing coding efficiency and enhancing discrimination around the adapted level. Adaptation also occurs in high-level vision, as illustrated by face aftereffects. However, the functiona...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2010.03.003

    authors： Rhodes G,Watson TL,Jeffery L,Clifford CW

    更新日期：2010-05-12 00:00:00

  • Perception viewed as an inverse problem.

    abstract：:The modern study of perception began when Fechner published his 'Elements of Psychophysics' in 1860. This book has guided most perception research ever since. It has become increasingly clear that there are problems with Fechner's approach, which assumes that the percept is completely determined by the sensory input. ...

    journal_title：Vision research

    pub_type： 杂志文章,评审

    doi：10.1016/s0042-6989(01)00173-0

    authors： Pizlo Z

    更新日期：2001-11-01 00:00:00

  • Reduced perceptual dimensionality in extrafoveal vision.

    abstract：:The classification behaviour of human observers with respect to compound Gabor signals is tested at foveal and extrafoveal retinal positions. Classification performance is analysed in terms of a probabilistic classification model recently proposed by Rentschler, Jüttner and Caelli [(1994) Vision Research, 34, 669-687]...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(95)00250-2

    authors： Jüttner M,Rentschler I

    更新日期：1996-04-01 00:00:00

  • Femtosecond laser induced flexibility change of human donor lenses.

    abstract：BACKGROUND:According to the Helmholtz theory of accommodation the loss of accommodation amplitude is caused by the growing sclerosis of the crystalline lens, whereas the ciliary muscle and the lens capsule are mainly uneffected by age. A permanent treatment method for presbyopia which offers a dynamic accommodation abi...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2009.04.028

    authors： Schumacher S,Oberheide U,Fromm M,Ripken T,Ertmer W,Gerten G,Wegener A,Lubatschowski H

    更新日期：2009-07-01 00:00:00

  • Transsaccadic perception of translating objects: effects of landmark objects and visual field position.

    abstract：:Previously Gysen, De Graef, and Verfaillie [Vision Research 42 (2002) 379] showed that, with stimulus displays presenting one stationary and one translating object, sensitivity for intrasaccadic displacements was higher for translating than for stationary objects. In the present paper the importance of the relative en...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(02)00105-0

    authors： Gysen V,Verfaillie K,De Graef P

    更新日期：2002-06-01 00:00:00

  • Infants' center bias in free viewing of real-world scenes.

    abstract：:This study examines how salience and a center bias drive infants' first fixation while looking at complex scenes. Adults are known to have a strong center bias, their first point of gaze is nearly always in the center of the scene. The center bias is likely to be a strategic bias, as looking towards the center minimiz...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2018.10.003

    authors： van Renswoude DR,van den Berg L,Raijmakers MEJ,Visser I

    更新日期：2019-01-01 00:00:00

  • Coding of the contrasts in natural images by populations of neurons in primary visual cortex (V1).

    abstract：:It is possible to discriminate between grating contrasts over a 300-fold contrast range, whereas V1 neurons have very limited dynamic ranges. Using populations of model neurons with contrast-response parameters taken from electrophysiological studies (cat and macaque), we investigated ways of combining responses to co...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(03)00277-3

    authors： Clatworthy PL,Chirimuuta M,Lauritzen JS,Tolhurst DJ

    更新日期：2003-08-01 00:00:00

  • Visual acuity versus letter contrast sensitivity in early cataract.

    abstract：:Large and small letter contrast sensitivity and visual acuity were assessed in 37 elderly eyes (mean VA -0.01 logMAR, Snellen 6/6) and their lens opacities were categorised and graded using the LOCS III system. Large letter contrast sensitivity was often not reduced in cataract from age-matched normal values and provi...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(97)00382-9

    authors： Elliott DB,Situ P

    更新日期：1998-06-01 00:00:00

  • Psychophysics of reading. XVIII. The effect of print size on reading speed in normal peripheral vision.

    abstract：:Reading in peripheral vision is slow and requires large print, posing substantial difficulty for patients with central scotomata. The purpose of this study was to evaluate the effect of print size on reading speed at different eccentricities in normal peripheral vision. We hypothesized that reading speeds should remai...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(98)00072-8

    authors： Chung ST,Mansfield JS,Legge GE

    更新日期：1998-10-01 00:00:00

  • Apparent speed of type I symmetrical plaids.

    abstract：:The apparent speed of plaids made up of two gratings having the same spatial frequency and the same speed was evaluated (symmetrical type I). The plaids were moving vertically as defined by the intersection-of-constraints (IOC) rule with a mean duration of 300 msec. The comparison-stimulus was a horizontal line moving...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(95)00092-e

    authors： Castet E,Morgan MJ

    更新日期：1996-01-01 00:00:00

  • Opponent-motion mechanisms are self-normalizing.

    abstract：:In the ultimate stage of the Adelson-Bergen motion energy model [Adelson, E. H., & Bergen, J. (1985). Spatiotemporal energy models for the perception of motion. Journal of the Optical Society of America, 2, 284-299], motion is derived from the difference between directionally opponent energies E(L) and E(R). However, ...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2004.10.018

    authors： Rainville SJ,Makous WL,Scott-Samuel NE

    更新日期：2005-04-01 00:00:00

  • A size illusion of the letter 'P'.

    abstract：:The perceived size of 'P' and 'p' is influenced by their vertical position relative to nearby letters. In the experiments reported here, we show that uppercase 'P' appears smallest when it is displaced downward toward the letter's lowercase position, whereas lowercase 'p' appears largest when it is near the uppercase ...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(99)00192-3

    authors： Katz M,Pola J

    更新日期：2000-01-01 00:00:00

  • Properties of cyclopean motion perception.

    abstract：:This study investigated the ability of human observers to discriminate the direction of laterally-moving cyclopean stimuli, in order to assess some of the properties of stereoscopic mechanisms that mediate the perception of cyclopean motion (motion existing at levels of binocular integration). The stimuli were moving ...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(92)90122-y

    authors： Patterson R,Ricker C,McGary J,Rose D

    更新日期：1992-01-01 00:00:00

  • Attentional selection of overlapped shapes: a study using brief shape aftereffects.

    abstract：:Prior studies using brief stimulus sequences revealed "opponent shape aftereffects", indicative of direct opponent coding of global shape attributes such as aspect ratio, skew, taper, curvature, and convexity (perhaps in IT). Further, aftereffects from overlapped opponent pairs of adaptor shapes (e.g., concave and con...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(02)00683-1

    authors： Suzuki S

    更新日期：2003-03-01 00:00:00

  • Crowding in the S-cone pathway.

    abstract：:The spatial extent of interference from nearby object or contours (the critical spacing of "crowding") has been thoroughly characterized across the visual field, typically using high contrast achromatic stimuli. However, attempts to link this measure with known properties of physiological pathways have been inconclusi...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2016.03.007

    authors： Coates DR,Chung STL

    更新日期：2016-05-01 00:00:00

  • Tracking of illusory target motion: differences between gaze and head responses.

    abstract：:We compared ocular and eye-head tracking responses to an illusion of diagonal motion produced when vertical movement of a small visual target was synchronized to horizontal movement of a background display. In response to sinusoidal movement, smooth ocular pursuit followed vertical target motion, with only a small hor...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(95)00067-a

    authors： Zivotofsky AZ,Averbuch-Heller L,Thomas CW,Das VE,Discenna AO,Leigh RJ

    更新日期：1995-11-01 00:00:00

  • An adaptation-induced pop-out in visual search.

    abstract：:The present study demonstrates that an object embedded in an array of identical objects can pop-out. Dependent on the stimuli preceding the search display, local (chromatic) adaptation causes an identical object to pop-out because it appears to have a colour (Expt 1) or brightness (Expt 2) that is slightly different f...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(93)90113-b

    authors： Theeuwes J,Lucassen MP

    更新日期：1993-11-01 00:00:00

  • Perceived direction of plaid motion is not predicted by component speeds.

    abstract：:It has been shown that the perceived direction of a plaid with components of unequal contrast is biased towards the direction of the higher-contrast component [Stone, L. S., Watson, A. B., & Mulligan, J. B. (1990). Effect of contrast on the perceived direction of a moving plaid. Vision Research 30, 1049-1067]. It was ...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/j.visres.2006.10.017

    authors： Champion RA,Hammett ST,Thompson PG

    更新日期：2007-02-01 00:00:00

  • Cone-rod interaction over time and space.

    abstract：:Scotopic background stimulation can elevate photopic increment thresholds by more than 2 log units. This cone-rod interaction is greatest on small backgrounds (less than 1 degree diameter), but is found consistently on large backgrounds as well. Interaction develops and disappears quickly as backgrounds are turned on ...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(85)90201-9

    authors： Buck SL

    更新日期：1985-01-01 00:00:00

  • Color induction via non-opponent lateral interactions in the human retina.

    abstract：:Retinal connections causing colors in Benham's top (pattern induced flicker colors, PIFCs) are investigated by psychophysical experiments. PIFCs are still seen when stimuli to different cones are demodulated selectively, indicating the involvement of non-opponent channels. PIFCs also occur on retinal areas next to tho...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/0042-6989(92)90034-g

    authors： von Campenhausen C,Hofstetter K,Schramme J,Tritsch MF

    更新日期：1992-05-01 00:00:00

  • Offset dynamics of human smooth pursuit eye movements: effects of target presence and subject attention.

    abstract：:Subjects made smooth pursuit eye movements with a target moving horizontally at 15 deg/sec. At a specified location the target either: (1) suddenly vanished; or (2) jumped to the fovea with target retinal velocity and feedback becoming 0 (target stabilized at the fovea). In each type of trial, the subjects either: "lo...

    journal_title：Vision research

    pub_type： 杂志文章

    doi：10.1016/s0042-6989(97)00058-8

    authors： Pola J,Wyatt HJ

    更新日期：1997-09-01 00:00:00