✦ LIBER ✦

Cortical visual processing is temporally dispersed by luminance in human subjects

✍ Scribed by Thomas Kammer; Lucia Lehr; Kuno Kirschfeld

Book ID: 117477525
Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 111 KB
Volume: 263
Category: Article
ISSN: 0304-3940
DOI: 10.1016/s0304-3940(99)00137-8

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Priming of visual cortex by temporal att

Priming of visual cortex by temporal attention? The effects of temporal predictability on stimulus(-specific) processing in early visual cortical areas

✍ Rico Fischer; Franziska Plessow; Hannes Ruge 📂 Article 📅 2013 🏛 Elsevier Science 🌐 English ⚖ 751 KB

Cortical activation during Braille readi

Cortical activation during Braille reading is influenced by early visual experience in subjects with severe visual disability: A correlational fMRI study

✍ Peter Melzer; Victoria L. Morgan; David R. Pickens; Ronald R. Price; Robert S. W 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 378 KB 👁 1 views

## Abstract Functional magnetic resonance imaging was performed on blind adults resting and reading Braille. The strongest activation was found in primary somatic sensory/motor cortex on both cortical hemispheres. Additional foci of activation were situated in the parietal, temporal, and occipital

Vibration-induced presynaptic inhibition

Vibration-induced presynaptic inhibition of the soleus H reflex is temporarily reduced by cortical magnetic stimulation in human subjects

✍ Valls-Sole, Josep; Alvarez, Ramiro; Tolosa, Eduardo S. 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 363 KB

Theta bandwidth determines human visual

Theta bandwidth determines human visual working memory capacity Human visual short term memory (VSTM) is capacity limited1. The neurophysiological basis for this limitation is, however, currently unknown. Here we apply the principle of efficient information transfer, derived from communications theory, to provide a mechanistic account of VSTM capacity. Shannon's information theory states that to increase the capacity of information encoded along a frequency axis, it is more efficient to expand the bandwidth than to increase the transmitted power for a given level of noise2. By applying Shannon's principles to human magnetoencephalography (MEG) recordings of oscillatory activity in the theta band during a VSTM task, we demonstrate that increasing memory load to capacity induces a parametric shift in theta frequency band during the delay period, from 4 to 8 Hz, in a right fronto-parietal network. Critically, we show that an individual's VSTM capacity is proportional to that parametric shift. Thus, the adherence of cortical neuronal oscillations to a fundamental principle of efficient information transfer appears to underlie the limited nature of visual representation in short-term memory.

✍ Moran, R.J.; Strange, B.A.; Campo, P.; Dolan, R.J. 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 142 KB