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Full-Text Articles in Life Sciences

Ipsilesional Biases In Saccades But Not Perception After Lesions Of The Human Inferior Parietal Lobule, Tony Ro, Chris Rorden, Jon Driver, Robert Rafal Oct 2001

Ipsilesional Biases In Saccades But Not Perception After Lesions Of The Human Inferior Parietal Lobule, Tony Ro, Chris Rorden, Jon Driver, Robert Rafal

Publications and Research

We examined the effects of chronic unilateral lesions to either the inferior parietal lobe, or to the dorsolateral prefrontal cortex including the frontal eye fields (FEFs), upon human visual perception and saccades in temporal-order-judgment (TOJ) tasks. Two visual events were presented on each trial, one in each hemifield at various stimulus onset asynchronies (SOAs). In the saccade task, patients moved their eyes to whichever stimulus attracted gaze first. In the perceptual-manual task, they pressed a button to indicate which stimulus was perceived first. Frontal patients showed appropriate TOJs for visual targets in both tasks. Parietal patients showed appropriate TOJs in …


Ionic Mechanisms Underlying Repetitive High-Frequency Burst Firing In Supragranular Cortical Neurons, Joshua C. Brumberg, Lionel G. Nowak, David A. Mccormick Jun 2001

Ionic Mechanisms Underlying Repetitive High-Frequency Burst Firing In Supragranular Cortical Neurons, Joshua C. Brumberg, Lionel G. Nowak, David A. Mccormick

Publications and Research

Neocortical neurons in awake, behaving animals can generate high-frequency (.300 Hz) bursts of action potentials, either in single bursts or in a repetitive manner. Intracellular recordings of layer II/III pyramidal neurons were obtained from adult ferret visual cortical slices maintained in vitro to investigate the ionic mechanisms by which a subgroup of these cells generates repetitive, high-frequency burst discharges, a pattern referred to as “chattering.” The generation of each but the first action potential in a burst was dependent on the critical interplay between the afterhyperpolarizations (AHPs) and afterdepolarizations (ADPs) that followed each action potential. The spike after depolarization and …


Cetaceans Of Venezuela: Their Distribution And Conservation Status, Aldemaro Romero Jr., A. Ignacio Agudo, Steven M. Green, Giuseppe Notarbartolo Di Sciara Jan 2001

Cetaceans Of Venezuela: Their Distribution And Conservation Status, Aldemaro Romero Jr., A. Ignacio Agudo, Steven M. Green, Giuseppe Notarbartolo Di Sciara

Publications and Research

No abstract provided.


Replacement Of The Troglomorphic Population Of Rhamdia Quelen (Pisces: Pimelodidae) By An Epigean Population Of The Same Species In The Cumaca Cave, Trinidad, W.I. 2001 Nss Convention, Aldemaro Romero Jr., Kelly M. Paulson, Joel E. Creswell, Ruth Baker, Anuradha Singh, Annabelle Mckie, Manna Jan 2001

Replacement Of The Troglomorphic Population Of Rhamdia Quelen (Pisces: Pimelodidae) By An Epigean Population Of The Same Species In The Cumaca Cave, Trinidad, W.I. 2001 Nss Convention, Aldemaro Romero Jr., Kelly M. Paulson, Joel E. Creswell, Ruth Baker, Anuradha Singh, Annabelle Mckie, Manna

Publications and Research

No abstract provided.


Humboldt’S Alleged Subterranean Fish From Ecuador, Aldemaro Romero Jr., Kelly M. Paulson Jan 2001

Humboldt’S Alleged Subterranean Fish From Ecuador, Aldemaro Romero Jr., Kelly M. Paulson

Publications and Research

No abstract provided.


Return To The Cumaca Cave, Trinidad, W.I, Aldemaro Romero Jr., Anuradha Singh, Annabelle Mckie, Michael Manna, Ruth Baker, Kelly M. Paulson Jan 2001

Return To The Cumaca Cave, Trinidad, W.I, Aldemaro Romero Jr., Anuradha Singh, Annabelle Mckie, Michael Manna, Ruth Baker, Kelly M. Paulson

Publications and Research

No abstract provided.