Modality-Specific Perceptual Expectations Selectively Modulate Baseline Activity in Auditory, Somatosensory, and Visual Cortices
نویسندگان
چکیده
منابع مشابه
Modality-specific perceptual expectations selectively modulate baseline activity in auditory, somatosensory, and visual cortices.
Valid expectations are known to improve target detection, but the preparatory attentional mechanisms underlying this perceptual facilitation remain an open issue. Using functional magnetic resonance imaging, we show here that expecting auditory, tactile, or visual targets, in the absence of stimulation, selectively increased baseline activity in corresponding sensory cortices and decreased acti...
متن کاملAuditory temporal expectations modulate activity in visual cortex
Temporal expectation is the ability to make predictions and to use temporal information to anticipate the occurrence of future events. This capacity is associated with highly efficient perceptual and motor behaviors. However, how cognitive systems use temporal information to optimize behavior and what brain structures are engaged during these processes remains largely unknown. Neurophysiologica...
متن کاملVisual-induced expectations modulate auditory cortical responses
Active sensing has important consequences on multisensory processing (Schroeder et al., 2010). Here, we asked whether in the absence of saccades, the position of the eyes and the timing of transient color changes of visual stimuli could selectively affect the excitability of auditory cortex by predicting the "where" and the "when" of a sound, respectively. Human participants were recorded with ...
متن کاملColumnar transformations in auditory cortex? A comparison to visual and somatosensory cortices.
Auditory cortical columns have been studied for decades, but intracolumnar processing in auditory cortex is still poorly understood, relative to what is known about such processing in visual cortex and somatosensory cortex. While there are certainly striking similarities in cortical structure across the modalities, investigations of auditory cortex anatomy and synaptic physiology have also foun...
متن کاملTactile processing in human somatosensory and auditory cortices
Tactile sensation plays an important role in everyday life. While the somatosensory system has been studied extensively, the majority of information has come from studies using animal models. Recent development of high-resolution anatomical and functional imaging techniques has enabled the non-invasive study of human somatosensory cortex and thalamus. This thesis provides new insights into the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Cerebral Cortex
سال: 2011
ISSN: 1460-2199,1047-3211
DOI: 10.1093/cercor/bhr083