Journal ArticleDOI
Functional properties of neurons in middle temporal visual area of the macaque monkey. I. Selectivity for stimulus direction, speed, and orientation
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TLDR
The presence of both direction and speed selectivity in MT of the macaque suggests that this area is more specialized for the analysis of visual motion than has been previously recognized.Abstract:
1. Recordings were made from single units in the middle temporal visual area (MT) of anesthetized, paralyzed macaque monkeys. A computer-driven stimulator was used to make quantitative tests of sel...read more
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MT neurons in the macaque exhibited two types of bimodal direction tuning as predicted by a model for visual motion detection.
Hiroaki Okamoto,Susumu Kawakami,Hide-Aki Saito,Eiki Hida,Keiichi Odajima,Daichi Tamanoi,Hiroshi Ohno +6 more
TL;DR: This is the first systematic study that records the two types of bimodality in MT neurons, which are characteristic of component and pattern cells and unimodal for high-speed bars or for spots.
Journal ArticleDOI
Economy of scale: a motion sensor with variable speed tuning.
TL;DR: If the S and T temporal frequency tuning functions have a particular form, then a motion sensor with variable speed tuning can be generated from just two V1 neurons, and a simple scaling of the S- or T-type neuron output before it is incorporated into the WIM model produces aMotion sensor that can be tuned to a wide continuous range of optimal speeds.
Journal ArticleDOI
Infant Motion: Detection (M:D) Ratios for Chromatically Defined and Luminance-defined Moving Stimuli
TL;DR: In order to assess the relative contributions of chromatic vs luminance information to motion processing in infants, a motion:detection (M:D) paradigm was employed, and results suggested that, for infants, luminance- as well as chromatically defined stimuli are detected by mechanisms that are labeled for direction of motion.
Journal ArticleDOI
RETRACTED ARTICLE: From the human visual system to the computational models of visual attention: a survey
Sílvio Filipe,Luís A. Alexandre +1 more
TL;DR: This article included text and ideas taken by the first author, without acknowledgement, from the following published article: “State-ofthe-art in visual attention modeling”, Ali Borji, Laurent Itti, IEEE Transactions on Pattern Analysis and Machine Intelligence 35(1) (2013) 185–207, published online 05/04/12.
Journal ArticleDOI
Direct evidence for encoding of motion streaks in human visual cortex
Deborah Apthorp,D. Samuel Schwarzkopf,Christian Kaul,Bahador Bahrami,Bahador Bahrami,Bahador Bahrami,David Alais,Geraint Rees +7 more
TL;DR: Signals encoding static-oriented streak information are present in human early visual cortex when viewing fast motion and local spatial patterns of brain activity in early retinotopic visual cortex reliably distinguished between static orientations.
References
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Journal ArticleDOI
Receptive fields and functional architecture of monkey striate cortex
David H. Hubel,Torsten N. Wiesel +1 more
TL;DR: The striate cortex was studied in lightly anaesthetized macaque and spider monkeys by recording extracellularly from single units and stimulating the retinas with spots or patterns of light, with response properties very similar to those previously described in the cat.
Journal ArticleDOI
Silver Staining of Myelin by Means of Physical Development
TL;DR: For staining myelin with silver a physical development technique has been devised that can render visible the thinnest fibers in various animal species, including fishes and reptiles, even in the early phase of myelination and may be applied to both frozen and embedded materials.