(Article begins on next page) The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters. Citation Lee, Joonyeol, and John H. R. Maunsell. 2009. A normalization model of attentional modulation of single unit responses. PLoS

-toring epilepsy. Peristimulus activity was recorded to stan-dardized, complex visual scenes depicting neutral, pleasant, or aversive content. Recording locations were verified with postoperative magnetic resonance imaging. Using a conserva-tive, multistep statistical evaluation, we found significant responses

statistically significant tuning to both texture and posture. These data suggest that single units in somatosensory cortex can encode multiple phenomena such as texture and posture. However, if this information is to be used to provide sensory ii feedback for a prosthesis, scientists must learn to further parse

Although many studies have shown that attention to a stimulus can enhance the responses of individual cortical sensory neurons, little is known about how attention accomplishes this change in response. Here, we propose that attention-based changes in neuronal responses depend on the same response

function. It was also shown that inverse Fourier transforming this function generates a response field (RF) - a function that is analogous to the response area of the unit obtained with single tones. The RF's of AI units exhibited a range of bandwidths and asymmetries, as required by the multi-scal...

of responses of reticulata neurons to intravenous apomorphine correlates with their sites of projection and (2) to determine how reticulata responses to apomorphine might be altered by the presence of striatal dopaminergic supersensitivity. Extracellular, single-unit recording studies were conducted

in guinea pig

task, but differ completely at the levels of synaptic strengths and single-unit responses. However, hierarchical clustering techniques applied to NETtalk reveal that these different networks have similar internal representations of letter-to-sound correspondences within groups of processing units

who were already in the labor force. Historically, the United States has chosen to provide a safety net for families with children. Since 1935, Aid to Families with Dependent Children (AFDC) has supplied cash welfare payments to needy single-parent families. Families on AFDC may also re-ceive food

for conjunctions of color, size, orientation, and direction of motion correlated closely with an independent measure of perceptual segregation. However, they appeared unrelated to the physi-ology of single-unit responses. Each dimension contributed additively to conjunction search rates, suggesting that each