The double dissociation between prosopagnosia, a face recognition deecit occurring after brain damage, and visual object agnosia, diiculty recognizing other kinds of complex objects, indicates that face and non-face object recognition may be served by partially independent mechanisms in the brain. Such a dissociation could be the result of a competitive learning mechanism that, during developme...

The role of the hippocampus in recognition memory is controversial. Recognition memory judgments may be made using different types of information, including object familiarity, an object's spatial location, or when an object was encountered. Experiment 1 examined the role of the hippocampus in recognition memory tasks that required the animals to use these different types of mnemonic informatio...

task models instantiated task model I Grasp Recognition recognizing where and how the human operator grasps an Object for achieving the assembly

Visual object recognition is remarkably accurate and robust, yet its neurophysiological underpinnings are poorly understood. Single cells in brain regions thought to underlie object recognition code for many stimulus aspects, which poses a limit on their invariance. Combining the responses of multiple non-invariant neurons via weighted linear summation offers an optimal decoding strategy, which...

INTRODUCTION The aim of this study was to determine if progesterone affects spatial and non-spatial working memory in intact male and female rats. METHODS Rats received subcutaneous injections of progesterone (500 microg) or vehicle (sesame oil). Four hours after hormone treatments, spatial and non-spatial memories were tested using novel object recognition and spatial object recognition task...

Many research questions require a within-class object recognition task matched for general cognitive requirements with a face recognition task. If the object task also has high internal reliability, it can improve accuracy and power in group analyses (e.g., mean inversion effects for faces vs. objects), individual-difference studies (e.g., correlations between certain perceptual abilities and f...

Rats with cytotoxic lesions of the perirhinal, postrhinal, and TE cortices (Rh+TE, n = 7) were compared with surgical control animals (n = 7) on a series of spontaneous object recognition tests. The Rh+TE group was associated with a failure to select the novel object. This recognition deficit contrasted with the apparently normal ability of the same animals to learn and perform a spatial workin...