In the present study, we tested the hypothesis that brain activation would reflect perceptual choices. To probe this question, we used functional magnetic resonance imaging (fMRI) during a challenging fear-disgust, two-choice discrimination task. We investigated how moment-to-moment fluctuations in fMRI signals were correlated with perceptual choice by computing a choice probability index that ...

Feature extraction is a main step in all perceptual image hashing schemes in which robust features will led to better results in perceptual robustness. Simplicity, discriminative power, computational efficiency and robustness to illumination changes are counted as distinguished properties of Local Binary Pattern features. In this paper, we investigate the use of local binary patterns for percep...

It is well known that Spread Transform Dither Modulation (STDM) is more robust to re-quantization such as JPEG compression than regular Quantization Index (QIM) does. However, STDM introduces relatively higher perceptual distortion and is quite sensitive to amplitude scaling, which is actually a quite common processing. In this paper, we propose algorithms to reduce perceptual distortion and to...

Affective disorders are more common in women. The forced swim test acts like a depressive stimulus. Hippocampus and frontal cortex 5-HT1A receptors of female and male Wistar rats subjected to the forced swim test were compared with a sham group. The forced swim test diminishes (P<0.05) the hippocampus 3H-8OH-DPAT bound in the female rats (184+/-16 fmol/mg protein) with respect to the male rats ...

Neuroscience presents great challenges and opportunities for psychotherapy. This article proposes recommendations and avenues for practice. Neurological knowledge is being employed in psychotherapy in three broad ways. First, it is used to explain and justify existing practices in psychotherapy, (e.g., the neuropsychoanalysis of Mark Solms). Second, neural localization studies are used to devis...