131,768 research outputs found
Nacodius martitae Morrone 1994
No full textNacodius martitae Morrone, 1994 Nacodius martitae Morrone, 1994e: 6 (type locality: Peru: D. La Libertad, 6 mi N Manachacui Valley; type material: H: CWOB and P: 2 AMNH, 8 CWOB, and 2 MZFC). Distribution. Northern Peru (Morrone, 1994e).Published as part of Morrone, Juan J., 2011, Annotated checklist of the tribe Listroderini (Coleoptera: Curculionidae: Cyclominae) 3119, pp. 1-68 in Zootaxa 3119 (1) on page 50, DOI: 10.11646/zootaxa.3119.1.1, http://zenodo.org/record/524625
Amathynetoides intemperatus Morrone 1994
No full textAmathynetoides intemperatus Morrone, 1994 Amathynetoides intemperatus Morrone, 1994c: 31 (type locality: Peru: Border D. Lima & E Junín, Abra de Anticona, Ticlio, 4850 m; type material: H: CWOB and P: 3 AMNH, 9 CWOB, 1 MLP, and 2 MZFC). Distribution. Southern Peru (Morrone, 1994c).Published as part of Morrone, Juan J., 2011, Annotated checklist of the tribe Listroderini (Coleoptera: Curculionidae: Cyclominae) 3119, pp. 1-68 in Zootaxa 3119 (1) on page 13, DOI: 10.11646/zootaxa.3119.1.1, http://zenodo.org/record/524625
Original high-res photos including colour chart for Figure in: ‘Rusty, Suppurated, and Discharged like Sēpía Ink: Scientific Knowledge, Animal Lore, and Colour Classification in Plutarch’s De Sera Num. 26, 565b–d’
No full textThis dataset includes the original photographs used for the comparative table of cephalopod ink stains and various corroded metals' powders in the Figure to be published in: Morrone, Daniele. ‘Rusty, Suppurated, and Discharged like Sēpía Ink: Scientific Knowledge, Animal Lore, and Colour Classification in Plutarch’s De Sera Num. 26, 565b–d’. Early Science and Medicine 30, no. 1 (2025): 1–25.
The 7 photographs are shared in their full resolution and without digital alterations, except for the one named "Whole sheet + colour chart, DarkTable corr.JPG". This photograph, also showing a colour chart as evidence for the stains' colours' fidelity, was edited using the software DarkTable to standardise the colours' appearence based on the included colour chart. Its corresponding original, unaltered photograph is included in the dataset as "Whole sheet + colour chart, Original.JPG".
All photographs were taken in the laboratory of the “G. Ciamician” Department of Chemistry at the University of Bologna by Daniele Morrone and Giacomo Montanari, who also conducted the required experiments
The role of perceptual learning on modality-specific visual attentional effects
No full textMorrone et al. [Morrone, M. C., Denti, V., & Spinelli, D. (2002). Color and luminance contrasts attract independent attention. Current Biology, 12, 1134-1137] reported that the detrimental effect on contrast discrimination thresholds of performing a concomitant task is modality specific: performing a secondary luminance task has no effect on colour contrast thresholds, and vice versa. Here we confirm this result with a novel task involving learning of spatial position, and go on to show that it is not specific to the cardinal colour axes: secondary tasks with red-green stimuli impede performance on a blue-yellow task and vice versa. We further show that the attentional effect can be abolished with continued training over 2-4 training days (2-20 training sessions), and that the effect of learning is transferable to new target positions. Given the finding of transference, we discuss the possibility that V4 is a site of plasticity for both stimulus types, and that the separation is due to a luminance-colour separation within this cortical area
Il matrimonio tra persone dello stesso sesso: via giudiziaria o via legislativa per la sua introduzione?
No full textIl contributo descrive le problematiche relative all'introduzione del matrimonio tra persone dello stesso sesso per via giudiziaria o via legislativa. A tal fine vengono riportati estratti delle più significative decisioni giurisprudenziali
Active movement restores veridical event-timing after tactile adaptation
No full textTomassini A, Gori M, Burr D, Sandini G, Morrone MC. Active movement restores veridical event-timing after tactile adaptation. J Neurophysiol 108: 2092-2100, 2012. First published July 25, 2012; doi: 10.1152/jn.00238.2012.-Growing evidence suggests that time in the subsecond range is tightly linked to sensory processing. Event-time can be distorted by sensory adaptation, and many temporal illusions can accompany action execution. In this study, we show that adaptation to tactile motion causes a strong contraction of the apparent duration of tactile stimuli. However, when subjects make a voluntary motor act before judging the duration, it annuls the adaptation-induced temporal distortion, reestablishing veridical event-time. The movement needs to be performed actively by the subject: passive movement of similar magnitude and dynamics has no effect on adaptation, showing that it is the motor commands themselves, rather than reafferent signals from body movement, which reset the adaptation for tactile duration. No other concomitant perceptual changes were reported (such as apparent speed or enhanced temporal discrimination), ruling out a generalized effect of body movement on somatosensory processing. We suggest that active movement resets timing mechanisms in preparation for the new scenario that the movement will cause, eliminating inappropriate biases in perceived time. Our brain seems to utilize the intention-to-move signals to retune its perceptual machinery appropriately, to prepare to extract new temporal information
Plochionocerus ashei Asiain, Marquez & Morrone, sp. nov.
No full textPlochionocerus ashei Asiain, Márquez & Morrone, sp. nov. Type material (2 specimens). Holotype, male: “ VENEZUELA, Aragua, Rancho Grande Biological Station, Pico Periquitos, 1300 m, 10 ° 21 ’0”N, 67 ° 41 ’0”W, 13.V. 1998, R. Anderson, VEN 1 A 98 0 0 51, ex: cloud forest litter / Holotype Plochionocerus ashei Asiain, Márquez & Morrone, 2007 ” (SEMC). Paratype, male: “ Ve n., Caracas, D. F., 1933, G. Vivas-B. / Paratype Plochionocerus ashei Asiain, Márquez & Morrone, 2007 ” (FMNH). Description. Total length 17.1–18.1 mm. Body metallic green or blue-violet. Head. Rounded; longer than wide (1.19–1.30 times), almost as long as pronotum, wider than pronotum (1.32 times); dorsal surface slightly convex; ventral surface flat, with slightly dense, expanded, umbilicate punctures (10–19 in each half of the head; similar to Fig. 52), arranged in “v”; first antennomere 1.58–1.60 times as long as antennomeres 2 + 3 combined, second antennomere 0.67–0.73 times as long as third antennomere, antennomeres 4–10 moderately transverse, gradually larger toward apex, apical antennomere moderately longer than wide (1.26 times), shorter than antennomeres 9 + 10 combined (0.92 times its length; similar to Fig. 28); mandible with basal external channel slightly developed. Thorax. Pronotum 1.48–1.49 times as long as wide, shorter than elytra (0.85–0.91 times); with visible microsculpture; with two clearly visible depressed areas in posterior third (Fig. 56). Prosternum slightly transverse (length/width: 0.83–0.84). Aedeagus. Ovate, length 2.37–2.60 mm, with parameres 0.37–0.38 times as long as the median lobe, apical area of median lobe 0.32–0.36 times as long as the total length of median lobe, and internal sac moderately visible (Fig. 77). Variation. The holotype is metallic green, the head is short (length/width: 1.19), the expanded, umbilicate punctures on the ventral surface of the head are less dense (10–14), and the external mandibular channel is slightly developed. The color of the paratype is metallic blue-violet, the head is longer (length/width: 1.3), the expanded, umbilicate punctures on the ventral surface of the head are denser (15–19), and the external mandibular channel is more strongly developed. Comparative notes. The species may be confused with other species with a rounded, dorsally convex head, but only in P. discedens is the ventral surface of the head flat. The two species can be distinguished by the greater density of expanded, umbilicate punctures, the presence of a basal mandibular channel, and the shorter pronotum in P. d i s c e d e n s; whereas in P. ashei the expanded, umbilicate punctures are less dense, the mandibular channel is reduced, and the pronotum is longer. Geographical distribution. Venezuela. Etymology. We take pleasure in dedicating this species to the late James Steve Ashe (Snow Museum, Kansas University) for his study of Latin American Staphylinidae and his fieldwork that resulted in several of the specimens analyzed in this paper.Published as part of Asiain, Julieta, Márquez, Juan & Morrone, Juan J., 2007, Phylogenetic systematics of the genera Plochionocerus Dejean and Agrodes Nordmann (Coleoptera: Staphylinidae: Xantholinini), pp. 1-53 in Zootaxa 1584 on page 13, DOI: 10.5281/zenodo.17841
Auditory and tactile signals combine to influence vision during binocular rivalry
No full textResolution of perceptual ambiguity is a major function of cross-modal interactions, making the study of bistable perception in multisensory contexts a powerful and revealing tool. We previously used binocular rivalry, a visual bistable phenomenon, to show that touch can specifically interact with vision to resolve spatial conflict between the eyes (Lunghi, Binda and Morrone, 2010). Here we investigate whether auditory and tactile stimuli can influence binocular rivalry generated by interocular temporal conflict. Using visual stimuli of different temporal frequencies (spatio-temporal noise filtered at 3.75 or at 15 Hz) to produce visual perceptual alternations, we added an amplitude modulated sound or a vibration that was congruent with one or the other visual temporal frequencies. We found that auditory and tactile stimulation interacted with binocular rivalry by promoting dominance of the congruent visual stimulus. This effect depended on the strength of the auditory/tactile stimulus, and was absent when a modulation depth declined to 33%. However, when auditory and tactile stimuli that were too weak on their own to bias binocular rivalry were combined, their influence over vision was very strong, suggesting the auditory and tactile temporal signals were summated. When auditory and tactile stimuli were presented at maximum strength, but temporally in anti-phase, they had no influence over vision, a null effect that again suggests audio-tactile summation in the temporal domain. These results indicate a functional link between auditory and tactile low temporal frequency channels, suggesting the existence of common neural substrates for the two sensory modalities
Costituzione e norme internazionali pattizie: il valore della Cedu (in Italia e in Germania)
No full textSpatial frequency selectivity during saccadic eye movements revealed by masking
No full textPurpose: Low but not high spatial frequencies are suppressed during saccades (Burr et al., J. Physiol. 1982), probably because of selective suppression of the magnocellular pathway (Burr et al., Nature 1994). Here we investigate further the mechanisms for the suppression, using masking techniques. Methods: Contrast sensitivity for horizontally oriented test grating patches of low spatial frequency (0.07 c/deg) was measured in the presence of continuously displayed, randomly jittering mask gratings of variable contrast and spatial frequency, using a forced-choice procedure. The test gratings were presented briefly (8 ms) during normal vision and during large horizontal saccades. Results: Sensitivity decreased with mask contrast, with a similar (near linear) dependency during normal viewing and during saccades. For both normal and saccadic viewing, maximum reduction in sensitivity occurred when the mask had the same spatial frequency as that of the test (0.07 c/deg), at all levels of mask contrast. Conclusions: That maximum masking occurs at the same spatial frequency of the test implies that mechanisms selective to low spatial frequencies are not totally suppressed during saccades, but continue to operate with reduced sensitivity. This result fits well with the acceleration of the impulse response for luminance but not for chromatic stimuli during saccades (Burr and Morrone, Vision Res. 1996), that may result from gain changes in the magnocellular pathway during saccades
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